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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, like December, in Exeter, Illinois, is a wintry winter month, with an average temperature fluctuating between 33.8°F (1°C) and 21.6°F (-5.8°C). January is Exeter's coldest month, registering average high temperatures of 33.8°F (1°C) and lows of 21.6°F (-5.8°C). Weather in January »
Weather in February
February, the last month of the winter in Exeter, is another cold month, with an average temperature ranging between min 25.2°F (-3.8°C) and max 38.8°F (3.8°C). Exeter's shift from January to February is accompanied by an average high-temperature of a still cold 38.8°F (3.8°C), a slight deviation from 33.8°F (1°C). Weather in February »
Weather in March
March, the first month of the spring in Exeter, is a cool month, with an average temperature varying between 36.1°F (2.3°C) and 51.8°F (11°C). The start of March brings a rise in the average high-temperature, moving from a cold 38.8°F (3.8°C) in February to a cool 51.8°F (11°C). Weather in March »
Weather in April
April is a refreshing spring month in Exeter, Illinois, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 63.5°F (17.5°C). April's arrival brings a change in high-temperatures, moving from a cool 51.8°F (11°C) in March to an enjoyable 63.5°F (17.5°C). Weather in April »
Weather in May
May, the last month of the spring in Exeter, is a pleasant month, with an average temperature varying between 73°F (22.8°C) and 55.9°F (13.3°C). Exeter sees a rise in temperature during May, with average high-temperatures transitioning from a comfortable 63.5°F (17.5°C) in April to an agreeable 73°F (22.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Exeter, Illinois, with an average temperature ranging between min 64.4°F (18°C) and max 81.9°F (27.7°C). As June begins, there's a slight increase in the average high-temperature, moving from a pleasant 73°F (22.8°C) in May to a warm 81.9°F (27.7°C). Weather in June »
Weather in July
July, like June, in Exeter, Illinois, is another warm summer month, with an average temperature fluctuating between 84°F (28.9°C) and 66.7°F (19.3°C). Exeter registers the highest average temperatures during the month of July, with peaks of 84°F (28.9°C) and lows of 66.7°F (19.3°C). During July, the heat index is calculated to be a very hot 95°F (35°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Exeter, Illinois, with an average temperature ranging between max 83.5°F (28.6°C) and min 64.9°F (18.3°C). With August's arrival, Exeter's weather records an average high-temperature of a still moderately hot 83.5°F (28.6°C), marking little difference from July's 84°F (28.9°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Exeter, Illinois, with temperature in the range of an average low of 58.8°F (14.9°C) and an average high of 78.1°F (25.6°C). The arrival of September suggests a slight decrease in the average high-temperature, moving from 83.5°F (28.6°C) in August to a still warm 78.1°F (25.6°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Exeter, Illinois, with temperature in the range of an average low of 47.3°F (8.5°C) and an average high of 64.2°F (17.9°C). A moderate decline in the average high-temperature is seen during October, decreasing from a moderately hot 78.1°F (25.6°C) in September to a refreshing 64.2°F (17.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Exeter, is also a fresh month, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 51.1°F (10.6°C). Arrival of November comes with a reduction in the average high-temperature, falling from a refreshing 64.2°F (17.9°C) in October to a cool 51.1°F (10.6°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Exeter, Illinois, with an average temperature ranging between max 39.2°F (4°C) and min 27.9°F (-2.3°C). December brings a drop in Exeter's average high-temperature, falling from a fresh 51.1°F (10.6°C) in November to a wintry 39.2°F (4°C). Weather in December »
Updated: Feb 12, 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 month is the coldest in Exeter?
The month of January sees the average lowest temperatures, reaching 33.8°F (1°C) at the peak and 21.6°F (-5.8°C) at the low.
What is the driest month in Exeter?
The months with the least rainfall in Exeter are January, February and December Rain falls for 7.5 days and accumulates 1.73" (44mm) of rain.
How much does it rain in Exeter?
In Exeter, Illinois, during the entire year, the rain falls for 155.4 days and collects up to 31.69" (805mm) of precipitation.
When does it snow in Exeter?
Months with snowfall in Exeter are January through April, October through December.
What is the snowiest month in Exeter?
The month with the most snowfall in Exeter is January, when snow falls for 9.8 days and typically aggregates up to 3.46" (88mm) of snow.
How many days does it snow in Exeter?
Throughout the year, in Exeter, Illinois, there are 30.2 snowfall days, and 10.75" (273mm) of snow is accumulated.
What is the month with the least sunshine in Exeter?
With an average of 4.3h of sunshine, January has the least sunshine of the year.
When is the lowest UV index in Exeter?
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) in Exeter?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Exeter, Illinois, 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 in Exeter?
The month with the most rainfall is May, when the rain falls for 18.8 days and typically aggregates up to 4.02" (102mm) of precipitation.
When it does not snow in Exeter?
In Exeter, Illinois, snow does not fall in May through September.
When are the longest days in Exeter?
With an average of 14h and 54min of daylight, June has the longest days of the year in Exeter.
What month has the most sunshine in Exeter?
June has the most sunshine of the year in Exeter, with an average of 10.3h of sunshine.
What is the month with the highest UV index in Exeter?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Exeter, Illinois.
What is the hottest time of year in Exeter?
July is Exeter's warmest month, registering average high temperatures of 84°F (28.9°C) and lows of 66.7°F (19.3°C).
What is the most humid month in Exeter?
With an average relative humidity of 82%, July is the most humid month.
What is the least humid month in Exeter?
The least humid month in Exeter, Illinois, is October, with an average relative humidity of 71%.
What is the month with the shortest days in Exeter?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Exeter, IL
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.8°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 (21.6°F).
Average pressure
Exeter, 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:
29.93"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:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Exeter, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.7mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6.1mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are January and April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity
Exeter, IL
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Exeter, IL
- Average rainfall in January:
1.73" - Average rainfall in February:
1.73" - Average rainfall in March:
2.44" - Average rainfall in April:
3.54" - Average rainfall in May:
4.02" - Average rainfall in June:
3.9"
The wettest month (with the highest rainfall) is May (4.02").
The driest months (with the least rainfall) are January, February and December (1.73").
Average rainfall days
Exeter, IL
- Average rainfall days in January:
7.5 days - Average rainfall days in February:
7.2 days - Average rainfall days in March:
14.6 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
14.9 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
12.1 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (7.2 days).
Average snowfall
Exeter, IL
The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Exeter, IL
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
7.9 days - Average snowfall days in March:
3.5 days - Average snowfall days in April:
0.7 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:
2.3 days - Average snowfall days in December:
5.9 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Exeter, 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 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 4min - 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 2min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 2min - 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 18min).
Average sunshine days
Exeter, IL
- Average sunshine days in January:
15.5 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
12.3 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
8.6 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (8.6 days).
Average UV index
Exeter, 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
Exeter, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 30).
Average visibility
Exeter, IL
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Exeter, Illinois, USA
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