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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 an icy winter month in Modesto, Illinois, with temperature in the range of an average high of 34.2°F (1.2°C) and an average low of 22.3°F (-5.4°C). January, noted for its average high-temperature of 34.2°F (1.2°C) and an average low-temperature of 22.3°F (-5.4°C), is considered the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Modesto, Illinois, with temperature in the range of an average low of 25.3°F (-3.7°C) and an average high of 39.4°F (4.1°C). The onset of February marks an average high-temperature of a still icy 39.4°F (4.1°C), hardly differing from January's 34.2°F (1.2°C). Weather in February »
Weather in March
March, the first month of the spring in Modesto, is a fresh month, with an average temperature fluctuating between 52°F (11.1°C) and 36.1°F (2.3°C). March's arrival coincides with a temperature rise, moving from February's cold 39.4°F (4.1°C) to a fresh 52°F (11.1°C). Weather in March »
Weather in April
April in Modesto, Illinois, is an enjoyable spring month, with an average temperature ranging between min 46.4°F (8°C) and max 63.5°F (17.5°C). Modesto sees a rise in temperature during April, with average high-temperatures transitioning from a cool 52°F (11.1°C) in March to a comfortable 63.5°F (17.5°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Modesto, Illinois, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 73.2°F (22.9°C). The shift into May is accompanied by a temperature increase, with the average high-temperature rising from an enjoyable 63.5°F (17.5°C) in April to an agreeable 73.2°F (22.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Modesto, Illinois, with an average temperature ranging between max 81.7°F (27.6°C) and min 64.9°F (18.3°C). Modesto's weather in June presents a minor rise in the average high-temperature, moving from an agreeable 73.2°F (22.9°C) in May to a moderately hot 81.7°F (27.6°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Modesto, Illinois, with an average temperature fluctuating between 83.3°F (28.5°C) and 66.7°F (19.3°C). In Modesto, temperatures reach their average annual highs in July, measuring 83.3°F (28.5°C) and a minimum average of 66.7°F (19.3°C). Throughout July, the heat index is evaluated at a hot 93.2°F (34°C). Weather in July »
Weather in August
August, the last month of the summer in Modesto, is another warm month, with an average temperature fluctuating between 82.2°F (27.9°C) and 64.9°F (18.3°C). August's onset records an average high-temperature of a still moderately hot 82.2°F (27.9°C), a near match to July's 83.3°F (28.5°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Modesto, Illinois, with an average temperature ranging between max 77.7°F (25.4°C) and min 59.4°F (15.2°C). September's onset records a minor alteration in the average high-temperature to a still warm 77.7°F (25.4°C) from August's 82.2°F (27.9°C). Weather in September »
Weather in October
October, like September, in Modesto, Illinois, is another enjoyable autumn month, with temperature in the range of an average high of 64.4°F (18°C) and an average low of 48.2°F (9°C). The transition into October involves a decrease in the average high-temperature, falling from a warm 77.7°F (25.4°C) in September to a comfortable 64.4°F (18°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Modesto, Illinois, with an average temperature ranging between min 36.5°F (2.5°C) and max 50.9°F (10.5°C). The transition into November is accompanied by a temperature decrease, with the average high-temperature shifting from a refreshing 64.4°F (18°C) in October to a fresh 50.9°F (10.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Modesto, Illinois, with an average temperature ranging between max 39.7°F (4.3°C) and min 28.6°F (-1.9°C). December indicates a shift in the average high-temperature, from November's fresh 50.9°F (10.5°C) to a wintry 39.7°F (4.3°C). Weather in December »
Updated: Jun 7, 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 time of the year is the coldest?
Modesto, Illinois, witnesses the coldest weather in January, with temperatures averaging a high of 34.2°F (1.2°C) and a low of 22.3°F (-5.4°C).
How much does it rain?
Throughout the year, there are 151.5 rainfall days, and 31.3" (795mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, November and December.
How much does it snow?
Throughout the year, there are 25.5 snowfall days, and 9.09" (231mm) of snow is accumulated.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.4h of sunshine.
What is the month 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.
What is the snowiest month in Modesto?
The month with the most snowfall is February, when snow falls for 7 days and typically aggregates up to 3.19" (81mm) 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.
When it does not snow?
In Modesto, snow does not fall in May through October.
What is the rainiest month?
June is the month with the most rainfall. Rain falls for 16.3 days and accumulates 3.86" (98mm) of precipitation.
When are the longest days?
With an average of 14h and 54min of daylight, June has the longest days of the year.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 10.3h of sunshine.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the hottest time of year?
Modesto experiences its average highest temperatures in July, reaching a peak of 83.3°F (28.5°C) and a minimum of 66.7°F (19.3°C).
What is the most humid month?
July is the most humid month, with an average relative humidity of 82%.
What is the least humid month?
With an average relative humidity of 71%, October is the least humid month.
What is the driest month?
The month with the least rainfall is December, when the rain falls for 8.5 days and typically collects 1.73" (44mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Modesto, IL
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.2°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure
Modesto, IL
- Average pressure in January:
30.15"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:
29.97"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 (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Modesto, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Modesto, IL
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Modesto, IL
- Average rainfall in January:
1.85" - Average rainfall in February:
1.81" - Average rainfall in March:
2.48" - Average rainfall in April:
3.58" - Average rainfall in May:
3.54" - Average rainfall in June:
3.86"
The wettest month (with the highest rainfall) is June (3.86").
The driest month (with the least rainfall) is December (1.73").
Average rainfall days
Modesto, IL
- Average rainfall days in January:
7.4 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
13.7 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
11 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.4 days).
Average snowfall
Modesto, IL
The month with the highest snowfall is February (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Modesto, IL
- Average snowfall days in January:
8.5 days - Average snowfall days in February:
7 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.4 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:
0.2 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
4.9 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Modesto, IL
- Average daylight in January:
9h and 5min - 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 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 0min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - 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:
9h and 5min - Average sunshine in September:
9h and 1min - 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Modesto, IL
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
12.1 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.6 days).
Average UV index
Modesto, 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
Modesto, IL
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July, August and September (Cloud cover 30).
Average visibility
Modesto, 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).
Modesto, Illinois, USA
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