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Contents
- The climate of Peoria
- The best time to visit Peoria
- The worst time to visit Peoria
- Spring weather in Peoria
- Summer weather in Peoria
- Autumn weather in Peoria
- Winter weather in Peoria
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Street lights and tall buildings in the city of Peoria, Illinois, as well as the night sky reflected in the waterfront
The climate of Peoria
Peoria, a captivating city located in Illinois which resides the geographic position of the Midwest, experiences a Dfa Köppen climate classification, meaning a humid continental climate with hot summers and no dry season. A variety of weather conditions that Peoria witnesses is independently influenced by each specific season. Rising temperatures, variance in precipitation, changes in daylight hours as well as shifts in the degree of wind speed, are key indicators to acknowledge in order to comprehend Peoria's weather is complex.
Throughout the year, Peoria exhibits changes in temperature, with the highest on average scaling from 81.1°F (27.3°C) to 82°F (27.8°C) in July and August, while the coldest temperatures are habitually recognized in January, ranging from 18.9°F (-7.3°C) to 30.7°F (-0.7°C). The barometric pressure is relatively steady across the year, with a minor decrease in April to around 29.94 in, then persistently increasing to reach its peak at 30.11 in during February and November. Peoria also experiences shifts in humidity, from a low of 71% in October to a high of 84% in July.
Rainfall is noted on average across the year, with higher precipitation predominantly seen in May of about 2.64" (67mm) and then gradually decreasing to a minimum of 0.75" (19mm) in January. Snowfall however, is not a frequent occurrence in Peoria. Typically, January witnesses the highest snowfall, from 0.91" (23mm) to 2.36" (60mm), and the rest of the months are practically devoid of snowfall.
Keeping in mind patterns within climate data, Peoria's months of July and August possess the most sunlight hours, averagely scaling between 14.7 to 15.1 hours. These months additionally experience sunshine that lasts roughly between 10.1 to 10.3 hours. Counter to that, January and December possess comparatively lesser daylight with approximately 9.3 to 9.7 hours and sunlight hours usually around 4 to 4.4 hours.
Throughout the year, Peoria exhibits changes in temperature, with the highest on average scaling from 81.1°F (27.3°C) to 82°F (27.8°C) in July and August, while the coldest temperatures are habitually recognized in January, ranging from 18.9°F (-7.3°C) to 30.7°F (-0.7°C). The barometric pressure is relatively steady across the year, with a minor decrease in April to around 29.94 in, then persistently increasing to reach its peak at 30.11 in during February and November. Peoria also experiences shifts in humidity, from a low of 71% in October to a high of 84% in July.
Rainfall is noted on average across the year, with higher precipitation predominantly seen in May of about 2.64" (67mm) and then gradually decreasing to a minimum of 0.75" (19mm) in January. Snowfall however, is not a frequent occurrence in Peoria. Typically, January witnesses the highest snowfall, from 0.91" (23mm) to 2.36" (60mm), and the rest of the months are practically devoid of snowfall.
Keeping in mind patterns within climate data, Peoria's months of July and August possess the most sunlight hours, averagely scaling between 14.7 to 15.1 hours. These months additionally experience sunshine that lasts roughly between 10.1 to 10.3 hours. Counter to that, January and December possess comparatively lesser daylight with approximately 9.3 to 9.7 hours and sunlight hours usually around 4 to 4.4 hours.
The best time to visit Peoria
Considering all the climatic parameters, it can be assessed that the prime time to pay a visit to Peoria is from late-May to early September. These are the warmest months, when temperatures can peak from 71.6°F (22°C) to 81.1°F (27.3°C). There's an average daylight window of over 13 hours. Cloudiness is relatively lower and the UV index of 5 to 6 suggests a high chance of sun exposure. Visitors are advised to wear sunblock and well-ventilated clothes. While rainfall is a bit high in May, it gradually decreases to minimum in August which suggests an abundance of sunny days.
The worst time to visit Peoria
January and February could be seen as the least favorable months to visit Peoria. During these months, the temperatures drop severely, falling anywhere from 18.9°F (-7.3°C) to 35.2°F (1.8°C). The snowfall, particularly in January, with a respective 2.36" (60mm) can cause hindrance for visitors. The UV index is also at its minimum during this time, representing low sun exposure.
Spring weather in Peoria
Spring in Peoria, typically observed from March to May, is marked by rising temperatures, from 34°F (1.1°C) in March to 71.6°F (22°C) in May. Accompanying this is an increase in rainfall from 1.34" (34mm) in March to 2.64" (67mm) in May. This season signifies a transition from colder to warmer weather, with April observing the highest wind speed at 10.6mph (17.1km/h) on average.
Summer weather in Peoria
Summer in Peoria spans from June to August, which is the driest and the sunniest season of the year. During this period, temperatures rise significantly, with the highest being 82°F (27.8°C) in July. Rainfall, however, decreases from 1.97" (50mm) in June to 1.3" (33mm) in August. Sunlight lasts between 10.1 to 10.3 hour per day, granting plenty of time to enjoy the weather.
Autumn weather in Peoria
Autumn is experienced from September to November in Peoria, bringing temperatures down from 76.1°F (24.5°C) in September to 36.5°F (2.5°C) in November. Rainfall also decreases in this season from 1.42" (36mm) in September to 1.02" (26mm) in November. The decreased cloudiness allows for sunlight hours to vary from 9.3 in September to 5.4 in November.
Winter weather in Peoria
Winter in Peoria, spanning from December through February, experiences the coldest temperatures, falling between 18.9°F (-7.3°C) to 35.2°F (1.8°C). Snowfall is prevalent in this season, particularly in January with up to 2.36" (60mm). Minimal sunlight hours ranging from 4.4 in December to 4 in January and reduced visibility make winter a challenging time, especially for outdoor activities.
Weather in January
As the new year dawns in Peoria, Illinois, winter finds its stride. January is classified as the coldest month of the year with low temperature reaching 18.9°F (-7.3°C) and high temperatures hovering around 30.7°F (-0.7°C). Weather in January »
Weather in February
While still clinging to the last vestiges of winter, February in Peoria offers a slight deviation from January's freezing conditions. With a slight increase in both high and low temperatures, this month signifies a subtle transition towards warmer days. Weather in February »
Weather in March
March in Peoria, Illinois is a month of change. It marks the exit of frigid winter and ushers in the milder spring season. The city witnesses a leap in rainfall amounts from 0.83in in February to 1.34in, signaling the shift from solid to liquid precipitation. Weather in March »
Weather in April
April bears the full bloom of spring in Peoria, successfully shoving aside any remnants of winter. Not only are temperatures on a steady climb but rainfall amounts also peak significantly, lending to vibrant and refreshing natural landscapes. Weather in April »
Weather in May
As May arrives, Peoria fully embraces the spring season, transitioning effortlessly into the early inklings of summer. With the consistency of warmer air and extended sunshine hours, plants deluge the city with a profusion of colors. Weather in May »
Weather in June
The advent of summer defines the weather of June in Peoria. Standing out prominently is the remarkable hike in high temperatures reaching up to 79.9°F (26.6°C), instigating the heat of summer. Complementing the ascending mercury is the dramatic increase in daylight hours, embellished by the longest sunshine hours of the year. Weather in June »
Weather in July
July distinguishes itself as the warmest month in Peoria, asserting the summer peak. It showcases maximum high temperatures and minimal wind speed, crafting an atmosphere of lazy summer days and tranquil warm nights. The city sees a reduction in rainfall, giving way to clear, sunny skies optimal for enjoying outdoor recreational activities. Weather in July »
Weather in August
As the fading summer sun marks August in Peoria, the weather begins a slow descent towards fall. Although sharing similar traits with the previous month of July, August has slightly lower temperatures and a diminished rainfall quantity. Weather in August »
Weather in September
September in Peoria, Illinois embodies the emerging fall, with nature painting the town in warm, earthy hues. The marked decrease in high temperatures to 76.1°F (24.5°C) and increase in wind speed introduces the crispness of autumn. Weather in September »
Weather in October
As Peoria moves further into fall, October brings a significant drop in temperatures and a discernible chill in the air. The change in weather from the preceding summer season is evident, with shorter days and longer nights. Concurrently, the city becomes a vibrant canvas of colors, with trees transitioning their wardrobe to shades of red, orange, and yellow. Weather in October »
Weather in November
November in Peoria, Illinois indicates a pronounced shift towards winter, with the chilliness becoming more pronounced. The dramatic drop in high temperatures from 62.1°F (16.7°C) in October to 48.4°F (9.1°C) in November provides evidence of this transition. Weather in November »
Weather in December
December’s arrival in Peoria paves the way for winter's full embrace, bringing along a consistently cold climate and the reintroduction of snowfalls. The watershed moment occurs when the first snowfall washes over the city, transforming it into a winter wonderland. Weather in December »
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
January, on average, is the coldest month, registering a high temperature of 30.7°F (-0.7°C) and a low of 18.9°F (-7.3°C).
What is the driest month?
January is the month with the least rainfall. Rain falls for 5.2 days and accumulates 0.75" (19mm) of precipitation.
How many days does it rain?
In Peoria, during the entire year, the rain falls for 129.2 days and collects up to 17.24" (438mm) of precipitation.
When does it snow?
Months with snowfall are January through April, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 9 days and typically aggregates up to 2.36" (60mm) of snow.
How many days does it snow?
Throughout the year, there are 26.7 snowfall days, and 7.09" (180mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 4h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 2.64" (67mm) of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days in Peoria?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month has the most sunshine?
With an average of 10.3h of sunshine, June has the most sunshine of the year.
What are the months with the highest UV index in Peoria?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What part of the year is the hottest?
The highest temperatures are recorded in July, with averages reaching a high of 82°F (27.8°C) and a low of 65.3°F (18.5°C).
What is the most humid month?
July is the most humid month, with an average relative humidity of 84%.
What is the least humid month?
October is the least humid month, with an average relative humidity of 71%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Peoria, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.7°F).
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Peoria, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Peoria, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Peoria, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Peoria, IL
- Average rainfall in January:
0.75" - Average rainfall in February:
0.83" - Average rainfall in March:
1.34" - Average rainfall in April:
2.01" - Average rainfall in May:
2.64" - Average rainfall in June:
1.97"
- Average rainfall in July:
1.65" - Average rainfall in August:
1.3" - Average rainfall in September:
1.42" - Average rainfall in October:
1.46" - Average rainfall in November:
1.02" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days
Peoria, IL
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
15.5 days
- Average rainfall days in July:
14.9 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
8.1 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.6 days).
Average snowfall
Peoria, IL
The month with the highest snowfall is January (2.36").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Peoria, IL
- Average snowfall days in January:
9 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
2.8 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
5.9 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Peoria, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Peoria, IL
- Average sunshine days in January:
18.5 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
16.7 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
12.6 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
19.4 days - Average sunshine days in November:
19.8 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.3 days).
Average UV index
Peoria, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Peoria, IL
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Peoria, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Peoria, Illinois, USA
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