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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, in Prophetstown, Illinois, is a freezing cold winter month, with an average temperature varying between 15.1°F (-9.4°C) and 27.7°F (-2.4°C). In Prophetstown, the month of January registers the lowest temperatures, averaging 27.7°F (-2.4°C) at the peak and 15.1°F (-9.4°C) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in Prophetstown, is a cold month, with an average temperature ranging between min 18.9°F (-7.3°C) and max 32°F (0°C). Prophetstown, Illinois, registers an average high-temperature of a wintry 32°F (0°C) at the commencement of February, closely related to the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Prophetstown, Illinois, with an average temperature ranging between min 31.5°F (-0.3°C) and max 46.4°F (8°C). The arrival of March brings a distinct temperature shift, with the average high-temperature escalating from an icy 32°F (0°C) in February to a frosty 46.4°F (8°C). Weather in March »
Weather in April
April in Prophetstown, Illinois, is a refreshing spring month, with an average temperature varying between 42.1°F (5.6°C) and 58.3°F (14.6°C). As Prophetstown enters April, the average high-temperature increases from the a frosty 46.4°F (8°C) of March to a moderate 58.3°F (14.6°C). Weather in April »
Weather in May
May, the last month of the spring in Prophetstown, is an agreeable month, with an average temperature fluctuating between 53.1°F (11.7°C) and 70°F (21.1°C). May's arrival coincides with a temperature rise, moving from April's refreshing 58.3°F (14.6°C) to a pleasant 70°F (21.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Prophetstown, Illinois, with an average temperature varying between 78.6°F (25.9°C) and 61.3°F (16.3°C). June introduces a marginal temperature uplift, with average high-temperatures adjusting from May's agreeable 70°F (21.1°C) to a warm 78.6°F (25.9°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Prophetstown, Illinois, with an average temperature ranging between max 80.2°F (26.8°C) and min 64°F (17.8°C). In Prophetstown, the month of July is known for its highest average temperatures, reaching a high of 80.2°F (26.8°C) and a low of 64°F (17.8°C). Weather in July »
Weather in August
August, the last month of the summer in Prophetstown, is also a moderately hot month, with an average temperature fluctuating between 62.1°F (16.7°C) and 79.9°F (26.6°C). August experiences an average high-temperature of a still warm 79.9°F (26.6°C), barely different from July's 80.2°F (26.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Prophetstown, is also a moderately hot month, with an average temperature varying between 55.8°F (13.2°C) and 74.7°F (23.7°C). The onset of September marks an average high-temperature of a still warm 74.7°F (23.7°C), hardly differing from August's 79.9°F (26.6°C). Weather in September »
Weather in October
October, like September, in Prophetstown, Illinois, is another refreshing autumn month, with an average temperature ranging between min 44.6°F (7°C) and max 61°F (16.1°C). Prophetstown experiences a temperature shift at the start of October, with average high-temperatures adjusting from a warm 74.7°F (23.7°C) in September to a refreshing 61°F (16.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Prophetstown, Illinois, with temperature in the range of an average high of 46°F (7.8°C) and an average low of 32.9°F (0.5°C). As Prophetstown transitions into November, the average high-temperature shows a marked reduction, decreasing from an enjoyable 61°F (16.1°C) in October to a frosty 46°F (7.8°C). Weather in November »
Weather in December
December, the first month of the winter in Prophetstown, is still a cold month, with an average temperature ranging between min 23.5°F (-4.7°C) and max 34.2°F (1.2°C). Onset of December witnesses a reduction in the average high-temperature, falling from a chilly 46°F (7.8°C) in November to an icy 34.2°F (1.2°C). Weather in December »
Updated: Aug 1, 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, recording an average high temperature of 27.7°F (-2.4°C) and a low temperature of 15.1°F (-9.4°C), is Prophetstown's coldest month.
What are the most humid months?
The months with the highest humidity in Prophetstown, Illinois, are January and July, with an average relative humidity of 85%.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 5.2 days and typically collects 1.42" (36mm) of precipitation.
How much does it rain?
In Prophetstown, during the entire year, the rain falls for 151.5 days and collects up to 30.24" (768mm) of precipitation.
When does it snow?
Months with snowfall are January through April, October through December.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 10.5 days and accumulates 4.49" (114mm) of snow.
How many days does it snow?
In Prophetstown, during the entire year, snow falls for 37.9 days and aggregates up to 15.83" (402mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 3.9h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
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 18.8 days and typically aggregates up to 4.53" (115mm) of precipitation.
When it does not snow in Prophetstown?
In Prophetstown, snow does not fall in May through September.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What part of the year is the hottest in Prophetstown?
The warmest period tends to be July, when average temperatures fluctuate between a high of 80.2°F (26.8°C) and a low of 64°F (17.8°C).
What month has the most sunshine?
July has the most sunshine of the year in Prophetstown, with an average of 9.9h of sunshine.
What is the month with the highest UV index?
July and August, with an average maximum UV index of 6, are months with the highest UV index.
What is the least humid month?
With an average relative humidity of 72%, October is the least humid month.
What is the month with the shortest days?
With an average of 9h and 12min of daylight, December has the shortest days of the year in Prophetstown, Illinois.
Average temperature
Prophetstown, IL
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure
Prophetstown, IL
- Average pressure in January:
30.13"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:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Prophetstown, IL
- Average wind speed in January:
10.1mph - Average wind speed in February:
10.2mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.6mph
- 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:
9.2mph - Average wind speed in November:
10mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Prophetstown, IL
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Prophetstown, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.61" - Average rainfall in March:
1.97" - Average rainfall in April:
3.54" - Average rainfall in May:
4.53" - Average rainfall in June:
3.5"
- Average rainfall in July:
2.99" - Average rainfall in August:
2.24" - Average rainfall in September:
2.2" - Average rainfall in October:
2.83" - Average rainfall in November:
1.81" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days
Prophetstown, IL
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
5.4 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
16.4 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
18.3 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (5.2 days).
Average snowfall
Prophetstown, IL
The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Prophetstown, IL
- Average snowfall days in January:
10.5 days - Average snowfall days in February:
9.7 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
1.3 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:
0.4 days - Average snowfall days in November:
2.7 days - Average snowfall days in December:
7.8 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Prophetstown, 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 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 3min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Prophetstown, IL
- Average sunshine days in January:
16.1 days - Average sunshine days in February:
14.2 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
9.9 days - Average sunshine days in June:
9.1 days
- Average sunshine days in July:
9.4 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
17.8 days - Average sunshine days in December:
17 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (9.1 days).
Average UV index
Prophetstown, IL
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Prophetstown, IL
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility
Prophetstown, IL
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Prophetstown, Illinois, USA
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