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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 Allendale, Illinois, with temperature in the range of an average high of 37.9°F (3.3°C) and an average low of 24.8°F (-4°C). Allendale experiences its lowest temperatures in January, with an average peak of 37.9°F (3.3°C) and a low of 24.8°F (-4°C). Weather in January »
Weather in February
February, the last month of the winter in Allendale, is a chilly month, with temperature in the range of an average low of 29.1°F (-1.6°C) and an average high of 43°F (6.1°C). The advent of February brings an average high-temperature of a frosty 43°F (6.1°C), exhibiting minor difference from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Allendale, is a fresh month, with temperature in the range of an average high of 53.8°F (12.1°C) and an average low of 38.3°F (3.5°C). As March sets, the average high-temperature shows an increase, moving up from a frosty 43°F (6.1°C) in February to a fresh 53.8°F (12.1°C). Weather in March »
Weather in April
April in Allendale, Illinois, is a comfortable spring month, with temperature in the range of an average low of 48.2°F (9°C) and an average high of 64.9°F (18.3°C). Noticing a change, the average high-temperature during April moves from March's fresh 53.8°F (12.1°C) to an enjoyable 64.9°F (18.3°C). Weather in April »
Weather in May
May, the last month of the spring in Allendale, is a moderately hot month, with an average temperature ranging between max 74.3°F (23.5°C) and min 58.1°F (14.5°C). The onset of May brings a temperature shift, with the average high-temperature moving from a refreshing 64.9°F (18.3°C) in April to a warm 74.3°F (23.5°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Allendale, Illinois, with an average temperature fluctuating between 65.8°F (18.8°C) and 82.9°F (28.3°C). Observing a minor shift, the average high-temperature during June adjusts from May's warm 74.3°F (23.5°C) to a still moderately hot 82.9°F (28.3°C). Weather in June »
Weather in July
July, like June, in Allendale, Illinois, is another warm summer month, with temperature in the range of an average low of 67.5°F (19.7°C) and an average high of 84.7°F (29.3°C). July stands out as Allendale's warmest month, with temperatures ranging between an average high of 84.7°F (29.3°C) and a low of 67.5°F (19.7°C). The heat index for July is evaluated at a torrid 96.8°F (36°C). Weather in July »
Weather in August
August, the last month of the summer in Allendale, is also a moderately hot month, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 65.7°F (18.7°C). As August unfolds, the average high-temperature reaches a still moderately hot 83.1°F (28.4°C), hinting at a slight fluctuation from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Allendale, Illinois, with an average temperature fluctuating between 60.6°F (15.9°C) and 78.8°F (26°C). With the arrival of September, Allendale's average high-temperature registers at a still moderately hot 78.8°F (26°C), indicating a subtle variation from the previous month. Weather in September »
Weather in October
October, like September, in Allendale, Illinois, is another comfortable autumn month, with temperature in the range of an average high of 66.6°F (19.2°C) and an average low of 49.6°F (9.8°C). A moderate decline in the average high-temperature is seen during October, decreasing from a moderately hot 78.8°F (26°C) in September to an enjoyable 66.6°F (19.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Allendale, Illinois, with an average temperature varying between 38.3°F (3.5°C) and 52.9°F (11.6°C). Onset of November witnesses a reduction in the average high-temperature, falling from an enjoyable 66.6°F (19.2°C) in October to a cool 52.9°F (11.6°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Allendale, Illinois, with an average temperature varying between 42.8°F (6°C) and 31.3°F (-0.4°C). During Allendale's transition into December, the average high-temperature lessens, moving from a fresh 52.9°F (11.6°C) in November to a frosty 42.8°F (6°C). Weather in December »
Updated: Aug 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 is the coldest month?
The coldest period tends to be January, when average temperatures fluctuate between a high of 37.9°F (3.3°C) and a low of 24.8°F (-4°C).
How many days does it rain in Allendale?
In Allendale, during the entire year, the rain falls for 155.6 days and collects up to 34.65" (880mm) of precipitation.
When does it snow in Allendale?
Months with snowfall are January through April, November and December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 6.8 days and accumulates 1.46" (37mm) of snow.
How much does it snow?
In Allendale, during the entire year, snow falls for 21 days and aggregates up to 5.39" (137mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.3h of sunshine.
When is the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
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 in Allendale?
The month with the most rainfall is April, when the rain falls for 16.4 days and typically aggregates up to 4.72" (120mm) of precipitation.
What is the most humid month?
May and July, with an average relative humidity of 80%, are most humid months.
When it does not snow?
May through October are months without snowfall.
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 6.
When are the longest days in Allendale?
With an average of 14h and 48min of daylight, June has the longest days of the year.
What month has the most sunshine?
With an average of 10.6h of sunshine, June has the most sunshine of the year.
What is the hottest time of year?
The temperatures in Allendale reach their highest averages in July, with highs of 84.7°F (29.3°C) and lows of 67.5°F (19.7°C).
What is the driest month in Allendale?
September is the month with the least rainfall. Rain falls for 12.3 days and accumulates 1.85" (47mm) of precipitation.
What is the least humid month?
With an average relative humidity of 70%, October is the least humid month.
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
Allendale, IL
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.9°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure
Allendale, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Allendale, IL
- Average wind speed in January:
10mph - 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:
8.3mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity
Allendale, IL
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Allendale, IL
- Average rainfall in January:
2.44" - Average rainfall in February:
2.48" - Average rainfall in March:
3.11" - Average rainfall in April:
4.72" - Average rainfall in May:
3.5" - Average rainfall in June:
3.5"
- Average rainfall in July:
2.91" - Average rainfall in August:
2.32" - Average rainfall in September:
1.85" - Average rainfall in October:
2.48" - Average rainfall in November:
2.72" - Average rainfall in December:
2.6"
The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days
Allendale, IL
- Average rainfall days in January:
9.4 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
14.9 days - Average rainfall days in April:
16.4 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
14.1 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
9.9 days - Average rainfall days in December:
10.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall
Allendale, IL
The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Allendale, IL
- Average snowfall days in January:
6.8 days - Average snowfall days in February:
6 days - Average snowfall days in March:
2.6 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 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
4.2 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Allendale, 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 3min - 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 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 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Allendale, IL
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
12.5 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
16.6 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.3 days).
Average UV index
Allendale, 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
Allendale, IL
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility
Allendale, 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).
Allendale, Illinois, USA
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