Climate and monthly weather forecastGrape Creek, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Grape Creek, Illinois, is another subzero cold winter month, with an average temperature ranging between max 31.6°F (-0.2°C) and min 20.5°F (-6.4°C). January, with an average high of 31.6°F (-0.2°C) and a low of 20.5°F (-6.4°C), signifies the coldest month of the year. Weather in January »Weather in February
February, the last month of the winter in Grape Creek, is an icy month, with an average temperature fluctuating between 37°F (2.8°C) and 23.9°F (-4.5°C). The average high-temperature mildly increases in February, edging from a freezing cold 31.6°F (-0.2°C) in January to a wintry 37°F (2.8°C). Weather in February »Weather in March
March, the first month of the spring in Grape Creek, is a chilly month, with an average temperature fluctuating between 34.9°F (1.6°C) and 49.1°F (9.5°C). In Grape Creek, the onset of March comes with an increased average high-temperature, moving from February's cold 37°F (2.8°C) to a frosty 49.1°F (9.5°C). Weather in March »Weather in April
April is a refreshing spring month in Grape Creek, Illinois, with an average temperature fluctuating between 45°F (7.2°C) and 61.2°F (16.2°C). Grape Creek sees an increase in average high-temperatures during April, moving from a frosty 49.1°F (9.5°C) in March to a comfortable 61.2°F (16.2°C). Weather in April »Weather in May
May, the last month of the spring in Grape Creek, is an agreeable month, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 71.8°F (22.1°C). As May begins, there is an increase in the average high-temperature, moving from a comfortable 61.2°F (16.2°C) in April to a pleasant 71.8°F (22.1°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Grape Creek, Illinois, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 79.9°F (26.6°C). As June arrives, a slight rise in the average high-temperature is observed, moving from an agreeable 71.8°F (22.1°C) in May to a warm 79.9°F (26.6°C). Weather in June »Weather in July
July, like June, in Grape Creek, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 64.9°F (18.3°C) and 81.3°F (27.4°C). In Grape Creek, temperatures reach their average annual highs in July, measuring 81.3°F (27.4°C) and a minimum average of 64.9°F (18.3°C). For July, the heat index is appraised at a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Grape Creek, Illinois, with temperature in the range of an average high of 80.6°F (27°C) and an average low of 63.3°F (17.4°C). The arrival of August brings an average high-temperature of a still moderately hot 80.6°F (27°C), subtly diverging from July's 81.3°F (27.4°C). Weather in August »Weather in September
September, the first month of the autumn in Grape Creek, is still a warm month, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 76.1°F (24.5°C). A minor adjustment in Grape Creek's average high-temperature is noted with the start of September, touching a still warm 76.1°F (24.5°C) from August's 80.6°F (27°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Grape Creek, Illinois, with an average temperature fluctuating between 47.1°F (8.4°C) and 63.1°F (17.3°C). The onset of October is marked by a decrease in temperature, transitioning from a moderately hot 76.1°F (24.5°C) in September to a refreshing 63.1°F (17.3°C). Weather in October »Weather in November
November, the last month of the autumn in Grape Creek, is another chilly month, with an average temperature varying between 48.9°F (9.4°C) and 35.6°F (2°C). November is characterized by a reduction in the average high-temperature, from an enjoyable 63.1°F (17.3°C) in October to a chilly 48.9°F (9.4°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Grape Creek, Illinois, with temperature in the range of an average low of 27.5°F (-2.5°C) and an average high of 37.6°F (3.1°C). The commencement of December indicates a shift in the average high-temperature, receding from November's frosty 48.9°F (9.4°C) to a cold 37.6°F (3.1°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Grape Creek, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Grape Creek, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"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:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Grape Creek, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Grape Creek, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Grape Creek, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.38" - Average rainfall in March:
2.32" - Average rainfall in April:
3.23" - Average rainfall in May:
3.15" - Average rainfall in June:
2.91"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.24" - Average rainfall in September:
1.38" - Average rainfall in October:
2.05" - Average rainfall in November:
1.46" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days
Grape Creek, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
8.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall
Grape Creek, IL
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Grape Creek, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.9 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:
2.5 days - Average snowfall days in December:
7.9 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
Grape Creek, IL
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 24min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 48min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Grape Creek, IL
- Average sunshine days in January:
15 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
10 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
18 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index
Grape Creek, 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
Grape Creek, IL
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility
Grape Creek, 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).





