Expand
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, like December, is a freezing cold winter month in Harvard, Illinois, with an average temperature ranging between max 25.3°F (-3.7°C) and min 13.3°F (-10.4°C). Harvard experiences its lowest temperatures in January, with an average peak of 25.3°F (-3.7°C) and a low of 13.3°F (-10.4°C). Weather in January »
Weather in February
February, the last month of the winter in Harvard, is another freezing cold month, with an average temperature fluctuating between 29.3°F (-1.5°C) and 16.5°F (-8.6°C). February's advent denotes a minor fluctuation in the average high-temperature to a still subzero cold 29.3°F (-1.5°C) from January's 25.3°F (-3.7°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Harvard, Illinois, with an average temperature fluctuating between 43.3°F (6.3°C) and 28.8°F (-1.8°C). Harvard's weather in March shows a rise in the average high-temperature, moving up from February's subzero cold 29.3°F (-1.5°C) to a chilly 43.3°F (6.3°C). Weather in March »
Weather in April
April is a cool spring month in Harvard, Illinois, with an average temperature ranging between max 54.9°F (12.7°C) and min 38.1°F (3.4°C). Harvard's transition into April sees a rise in the average high-temperature, advancing from a chilly 43.3°F (6.3°C) in March to a fresh 54.9°F (12.7°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Harvard, Illinois, with an average temperature fluctuating between 49.5°F (9.7°C) and 66.9°F (19.4°C). May indicates a change in the average high-temperature, moving up from a fresh 54.9°F (12.7°C) in April to an enjoyable 66.9°F (19.4°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Harvard, Illinois, with an average temperature varying between 76.1°F (24.5°C) and 58.5°F (14.7°C). The shift into June is characterized by a rise in the average high-temperature, transitioning from May's comfortable 66.9°F (19.4°C) to a moderately hot 76.1°F (24.5°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Harvard, Illinois, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 62.6°F (17°C). July stands out as Harvard's warmest month, with an average high-temperature of 79.3°F (26.3°C) and a low-temperature of 62.6°F (17°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Harvard, Illinois, with an average temperature varying between 77.5°F (25.3°C) and 60.1°F (15.6°C). In August, Harvard experiences a minor shift in meteorological conditions with average high-temperatures marked at a still warm 77.5°F (25.3°C), closely mirroring the climate in July. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Harvard, Illinois, with an average temperature varying between 53.6°F (12°C) and 72.1°F (22.3°C). A mild drop in Harvard's average high-temperature is observed in September, transitioning from a moderately hot 77.5°F (25.3°C) in August to a pleasant 72.1°F (22.3°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Harvard, Illinois, with an average temperature varying between 42.8°F (6°C) and 58.5°F (14.7°C). In Harvard, the average high-temperature in October decreases from a pleasant 72.1°F (22.3°C) in September to a mild 58.5°F (14.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Harvard, Illinois, with an average temperature varying between 30.6°F (-0.8°C) and 44.1°F (6.7°C). As Harvard enters November, the average high-temperature decreases from the a mild 58.5°F (14.7°C) of October to a frosty 44.1°F (6.7°C). Weather in November »
Weather in December
December, the first month of the winter in Harvard, is also an icy month, with an average temperature varying between 21.6°F (-5.8°C) and 32°F (0°C). Onset of December comes with a temperature decline, the average high falling from a frosty 44.1°F (6.7°C) in November to a wintry 32°F (0°C). Weather in December »
Updated: Jul 21, 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, with an average high of 25.3°F (-3.7°C) and a low of 13.3°F (-10.4°C), signifies the coldest month of the year.
What is the most humid month?
With an average relative humidity of 87%, January is the most humid month.
How much does it rain?
In Harvard, during the entire year, the rain falls for 152.8 days and collects up to 26.46" (672mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 14.3 days and typically aggregates up to 4.41" (112mm) of snow.
How much does it snow?
Throughout the year, there are 54.4 snowfall days, and 16.93" (430mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.5h of sunshine.
When is the lowest UV index?
The months with the lowest UV index in Harvard 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 least humid month?
The months with the lowest humidity are April and October, with an average relative humidity of 77%.
What is the month with the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 5.
What is the rainiest month?
June is the month with the most rainfall. Rain falls for 17.9 days and accumulates 3.58" (91mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What time of the year is the hottest?
Harvard's warmest month, July, generally records average temperatures ranging from a high of 79.3°F (26.3°C) to a low of 62.6°F (17°C).
What month has the most sunshine?
The month with the most sunshine is July, with an average of 9.6h of sunshine.
What is the driest month?
December is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.3" (33mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Harvard, IL
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (25.3°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Harvard, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"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"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Harvard, IL
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Harvard, IL
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall
Harvard, IL
- Average rainfall in January:
1.38" - Average rainfall in February:
1.34" - Average rainfall in March:
1.54" - Average rainfall in April:
3.07" - Average rainfall in May:
3.03" - Average rainfall in June:
3.58"
- Average rainfall in July:
3.27" - Average rainfall in August:
2.72" - Average rainfall in September:
1.65" - Average rainfall in October:
2.24" - Average rainfall in November:
1.34" - Average rainfall in December:
1.3"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days
Harvard, IL
- Average rainfall days in January:
4.9 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
17.9 days
- Average rainfall days in July:
18.2 days - Average rainfall days in August:
16.6 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
7.9 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (4.9 days).
Average snowfall
Harvard, IL
- Average snowfall in January:
4.41" - Average snowfall in February:
3.98" - Average snowfall in March:
2.01" - Average snowfall in April:
1.77" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Harvard, IL
- Average snowfall days in January:
14.3 days - Average snowfall days in February:
11.5 days - Average snowfall days in March:
7.8 days - Average snowfall days in April:
3.3 days - Average snowfall days in May:
0.2 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:
0.9 days - Average snowfall days in November:
4.8 days - Average snowfall days in December:
11.6 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Harvard, IL
- Average daylight in January:
9h and 3min - 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 0min - 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 6min).
- Average sunshine in January:
3h and 3min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 2min - Average sunshine in September:
8h and 2min - Average sunshine in October:
5h and 1min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Harvard, IL
- Average sunshine days in January:
13.4 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
13.3 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
9.7 days - Average sunshine days in June:
10 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
11 days - Average sunshine days in September:
15 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
16.3 days - Average sunshine days in December:
14.4 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.7 days).
Average UV index
Harvard, IL
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Harvard, IL
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility
Harvard, IL
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
Harvard, Illinois, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location