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Contents
- 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
Weather in January
January, the same as December, is another cold winter month in Hartford, Illinois, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 36.1°F (2.3°C). Hartford witnesses the coldest weather in January, with temperatures averaging a high of 36.1°F (2.3°C) and a low of 23.4°F (-4.8°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Hartford, Illinois, with an average temperature ranging between max 41°F (5°C) and min 27.1°F (-2.7°C). February commences with an average high-temperature of a still wintry 41°F (5°C), showing little deviation from January's 36.1°F (2.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Hartford, Illinois, with an average temperature varying between 53.4°F (11.9°C) and 37.2°F (2.9°C). The start of March signals an increase in the average high-temperature, moving from an icy 41°F (5°C) in February to a cool 53.4°F (11.9°C). Weather in March »
Weather in April
April in Hartford, Illinois, is a refreshing spring month, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 64.4°F (18°C). April witnesses an increase in the average high-temperature, moving from a cool 53.4°F (11.9°C) in March to an enjoyable 64.4°F (18°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Hartford, Illinois, with temperature in the range of an average low of 57°F (13.9°C) and an average high of 74.1°F (23.4°C). May sees a rise in the average high-temperature, climbing from a refreshing 64.4°F (18°C) in April to a warm 74.1°F (23.4°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Hartford, Illinois, with temperature in the range of an average low of 66.2°F (19°C) and an average high of 83.1°F (28.4°C). As May gives way to June, the average high-temperature displays an increase, moving from a warm 74.1°F (23.4°C) to a still moderately hot 83.1°F (28.4°C). Weather in June »
Weather in July
July, like June, in Hartford, Illinois, is another warm summer month, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 85.3°F (29.6°C). The average temperatures reach their apex in July, averaging 85.3°F (29.6°C) at the high end and 67.6°F (19.8°C) at the low end. The heat index value during July is appraised at a sweltering 96.8°F (36°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Hartford, Illinois, with an average temperature ranging between min 65.7°F (18.7°C) and max 84°F (28.9°C). August's arrival brings an average high-temperature of a still moderately hot 84°F (28.9°C), slightly deviating from July's 85.3°F (29.6°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Hartford, Illinois, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 59.4°F (15.2°C). In Hartford, the average high-temperature in September gently drops from 84°F (28.9°C) in August to a still moderately hot 78.6°F (25.9°C). Weather in September »
Weather in October
October, like September, in Hartford, Illinois, is another comfortable autumn month, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 48.7°F (9.3°C). Stepping into October, Hartford observes a temperature decline, with the average high falling from September's warm 78.6°F (25.9°C) to an enjoyable 65.3°F (18.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Hartford, is also a fresh month, with an average temperature ranging between max 52.2°F (11.2°C) and min 37°F (2.8°C). Hartford's progression into November involves a drop in the average high-temperature, receding from a refreshing 65.3°F (18.5°C) in October to a fresh 52.2°F (11.2°C). Weather in November »
Weather in December
December, the first month of the winter in Hartford, is also an icy month, with an average temperature varying between 41.4°F (5.2°C) and 29.8°F (-1.2°C). The beginning of December marks a decrease in the average high-temperature, transitioning from a fresh 52.2°F (11.2°C) in November to a cold 41.4°F (5.2°C). Weather in December »
Updated: Jun 24, 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 is the coldest month?
January is the coldest month in Hartford, with an average high-temperature of 36.1°F (2.3°C) and an average low-temperature of 23.4°F (-4.8°C).
How much does it rain?
Throughout the year, there are 138 rainfall days, and 23.9" (607mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, November and December.
How many days does it snow?
In Hartford, during the entire year, snow falls for 18.6 days and aggregates up to 4.53" (115mm) of snow.
What is the month with the least sunshine?
The months with the least sunshine are January and February, with an average of 4.5h of sunshine.
When is 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.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 6.9 days and typically collects 1.14" (29mm) of precipitation.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 5.4 days and accumulates 1.61" (41mm) of snow.
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 wettest month?
The month with the most rainfall is May, when the rain falls for 16.6 days and typically aggregates up to 3.07" (78mm) of precipitation.
When it does not snow?
In Hartford, snow does not fall in May through October.
When is the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days?
The month with the longest days is June, with an average of 14h and 48min of daylight.
What month has the most sunshine?
The month with the most sunshine is June, with an average of 10.4h of sunshine.
What is the warmest month?
July proves to be the warmest month, recording an average peak temperature of 85.3°F (29.6°C) and a minimum temperature of 67.6°F (19.8°C).
What is the most humid month?
The most humid month is July, with an average relative humidity of 80%.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days?
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Hartford, IL
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
Hartford, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Hartford, IL
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.3mph - Average wind speed in May:
7.6mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.3mph - Average wind speed in October:
8.1mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity
Hartford, IL
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Hartford, IL
- Average rainfall in January:
1.26" - Average rainfall in February:
1.14" - Average rainfall in March:
1.57" - Average rainfall in April:
2.4" - Average rainfall in May:
3.07" - Average rainfall in June:
2.76"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.91" - Average rainfall in September:
1.69" - Average rainfall in October:
1.93" - Average rainfall in November:
1.3" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days
Hartford, IL
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
6.9 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
13.4 days - Average rainfall days in May:
16.6 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
6.7 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).
Average snowfall
Hartford, IL
The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Hartford, IL
- Average snowfall days in January:
6 days - Average snowfall days in February:
5.4 days - Average snowfall days in March:
2 days - Average snowfall days in April:
0.3 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 days - Average snowfall days in December:
3.8 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Hartford, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- 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:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 3min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 3min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days
Hartford, IL
- Average sunshine days in January:
20.3 days - Average sunshine days in February:
16.1 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
14 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
20.1 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index
Hartford, IL
The months with the highest UV index are May, 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
Hartford, IL
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility
Hartford, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hartford, Illinois, USA
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