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 Forrest, Illinois, with an average temperature fluctuating between 30.6°F (-0.8°C) and 18.5°F (-7.5°C). January is Forrest's coldest month, registering average high temperatures of 30.6°F (-0.8°C) and lows of 18.5°F (-7.5°C). Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Forrest, Illinois, with temperature in the range of an average high of 35.1°F (1.7°C) and an average low of 21.7°F (-5.7°C). The shift to February signals an average high-temperature of a wintry 35.1°F (1.7°C), subtly varied from January's 30.6°F (-0.8°C). Weather in February »
Weather in March
March, the first month of the spring in Forrest, is a chilly month, with an average temperature fluctuating between 47.7°F (8.7°C) and 33.4°F (0.8°C). With the onset of March, the average high-temperature slightly shifts from February's icy 35.1°F (1.7°C) to a chilly 47.7°F (8.7°C). Weather in March »
Weather in April
April is a moderate spring month in Forrest, Illinois, with an average temperature ranging between min 43.9°F (6.6°C) and max 59.7°F (15.4°C). In Forrest, the average high-temperature in April increases from a frosty 47.7°F (8.7°C) in March to a refreshing 59.7°F (15.4°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Forrest, Illinois, with an average temperature ranging between min 55°F (12.8°C) and max 71.6°F (22°C). A rise in the average high-temperature is observed during May, moving from a refreshing 59.7°F (15.4°C) in April to a pleasant 71.6°F (22°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Forrest, Illinois, with an average temperature ranging between min 62.8°F (17.1°C) and max 79.3°F (26.3°C). Forrest's weather in June presents a minor rise in the average high-temperature, moving from an agreeable 71.6°F (22°C) in May to a warm 79.3°F (26.3°C). Weather in June »
Weather in July
July, like June, in Forrest, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 80.8°F (27.1°C). Forrest's July weather reaches an average high of 80.8°F (27.1°C) and an average low of 64.6°F (18.1°C), making it the warmest month. July's heat index is appraised at a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Forrest, Illinois, with an average temperature fluctuating between 62.6°F (17°C) and 79.7°F (26.5°C). In August, Forrest experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 80.8°F (27.1°C) in July to a still moderately hot 79.7°F (26.5°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Forrest, Illinois, with an average temperature varying between 57.2°F (14°C) and 75.7°F (24.3°C). As Forrest, Illinois, transitions into September, the average high-temperature stands at a still warm 75.7°F (24.3°C), offering little variation from the preceding month. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Forrest, Illinois, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 46.8°F (8.2°C). In October, the meteorological conditions alter, with the average high-temperature shifting from a warm 75.7°F (24.3°C) in September to a comfortable 62.2°F (16.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Forrest, is another chilly month, with an average temperature fluctuating between 47.8°F (8.8°C) and 34.9°F (1.6°C). November indicates a noticeable reduction in the average high-temperature, moving down from an enjoyable 62.2°F (16.8°C) in October to a chilly 47.8°F (8.8°C). Weather in November »
Weather in December
December, the first month of the winter in Forrest, is also a wintry month, with an average temperature ranging between min 26.1°F (-3.3°C) and max 36.5°F (2.5°C). Stepping into December, Forrest observes a temperature decline, with the average high falling from November's frosty 47.8°F (8.8°C) to a wintry 36.5°F (2.5°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Forrest?
January, having an average high-temperature of 30.6°F (-0.8°C) and an average low-temperature of 18.5°F (-7.5°C), is the coldest month in Forrest, Illinois.
What is the driest month in Forrest?
January is the month with the least rainfall. Rain falls for 5 days and accumulates 0.79" (20mm) of precipitation.
How many days does it rain in Forrest?
Throughout the year, there are 130.5 rainfall days, and 17.44" (443mm) of precipitation is accumulated.
When does it snow in Forrest?
January through April, October through December are months with snowfall in Forrest.
What is the snowiest month in Forrest?
January is the month with the most snowfall. Snow falls for 10.6 days and accumulates 2.09" (53mm) of snow.
How many days does it snow in Forrest?
Throughout the year, in Forrest, there are 30.5 snowfall days, and 7.68" (195mm) of snow is accumulated.
What is the month with the least sunshine in Forrest?
January has the least sunshine of the year in Forrest, Illinois, with an average of 3.8h of sunshine.
When is Daylight Saving Time (DST) in Forrest?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Forrest, 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 Forrest?
The month with the most rainfall in Forrest is May, when the rain falls for 17 days and typically aggregates up to 2.56" (65mm) of precipitation.
When it does not snow in Forrest?
In Forrest, Illinois, snow does not fall in May through September.
When are the longest days in Forrest?
The month with the longest days in Forrest, Illinois, is June, with an average of 15h and 0min of daylight.
What month has the most sunshine in Forrest?
June has the most sunshine of the year, with an average of 9.9h of sunshine.
What is the month with the highest UV index in Forrest?
June and July, with an average maximum UV index of 6, are months with the highest UV index in Forrest, Illinois.
What time of the year is the hottest in Forrest?
In Forrest, July records the average highest temperatures, peaking at 80.8°F (27.1°C) and reaching a low of 64.6°F (18.1°C).
What is the most humid month in Forrest?
July is the most humid month in Forrest, Illinois, with an average relative humidity of 86%.
What is the least humid month in Forrest?
October is the least humid month in Forrest, with an average relative humidity of 71%.
What is the month with the shortest days in Forrest?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
What is the month with the lowest UV index in Forrest?
The month with the lowest UV index in Forrest, Illinois, is December, with an average maximum UV index of 1.
Average temperature
Forrest, IL
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Forrest, 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:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Forrest, IL
- Average wind speed in January:
10.8mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9.1mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Forrest, IL
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Forrest, IL
- Average rainfall in January:
0.79" - Average rainfall in February:
0.87" - Average rainfall in March:
1.34" - Average rainfall in April:
1.97" - Average rainfall in May:
2.56" - Average rainfall in June:
2.05"
- Average rainfall in July:
2.09" - Average rainfall in August:
1.5" - Average rainfall in September:
1.18" - Average rainfall in October:
1.34" - Average rainfall in November:
0.91" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days
Forrest, IL
- Average rainfall days in January:
5 days - Average rainfall days in February:
5 days - Average rainfall days in March:
11.2 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
17 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
6.9 days
The month with the highest number of rainy days is May (17 days).
The months with the least rainy days are January and February (5 days).
Average snowfall
Forrest, IL
The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Forrest, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
7.1 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
0.8 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:
2 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Forrest, 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 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 4min - 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 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Forrest, IL
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
11.4 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
18.9 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.4 days).
Average UV index
Forrest, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Forrest, IL
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Forrest, 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).
Forrest, 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
