Climate and monthly weather forecastGays, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Gays, Illinois, with an average temperature varying between 22.5°F (-5.3°C) and 34.5°F (1.4°C). January, with average temperatures reaching a high of 34.5°F (1.4°C) and a low of 22.5°F (-5.3°C), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Gays, Illinois, with an average temperature varying between 26.4°F (-3.1°C) and 39.6°F (4.2°C). As January turns into February, the average high-temperatures rest at a still wintry 39.6°F (4.2°C), showing a minor variation from the prior month. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Gays, Illinois, with temperature in the range of an average high of 51.4°F (10.8°C) and an average low of 36.3°F (2.4°C). March brings a rise in Gays's average high-temperature, moving from a cold 39.6°F (4.2°C) in February to a fresh 51.4°F (10.8°C). Weather in March »Weather in April
April in Gays, Illinois, is a comfortable spring month, with temperature in the range of an average high of 63°F (17.2°C) and an average low of 46.6°F (8.1°C). April witnesses an increase in the average high-temperature, moving from a cool 51.4°F (10.8°C) in March to an enjoyable 63°F (17.2°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Gays, Illinois, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 73°F (22.8°C). Observing a rise in May, the average high-temperature goes from April's refreshing 63°F (17.2°C) to a pleasant 73°F (22.8°C). Weather in May »Weather in June
June, the first month of the summer in Gays, is a warm month, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 81.1°F (27.3°C). A minor escalation in the average high-temperature is seen with the onset of June, moving from an agreeable 73°F (22.8°C) in May to a warm 81.1°F (27.3°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Gays, Illinois, with an average temperature fluctuating between 66.4°F (19.1°C) and 82.9°F (28.3°C). Gays records the warmest temperatures in July, averaging a high of 82.9°F (28.3°C) and a low of 66.4°F (19.1°C). The heat index value for July is estimated at a tropical 91.4°F (33°C). Weather in July »Weather in August
August, the last month of the summer in Gays, is also a moderately hot month, with an average temperature varying between 81.7°F (27.6°C) and 64°F (17.8°C). The arrival of August is marked by an average high-temperature of a still moderately hot 81.7°F (27.6°C), bearing a close resemblance to July. Weather in August »Weather in September
September, the first month of the autumn in Gays, is still a warm month, with an average temperature fluctuating between 59.2°F (15.1°C) and 77.2°F (25.1°C). September's weather records an average high-temperature of a still warm 77.2°F (25.1°C), showing little deviation from August. Weather in September »Weather in October
October, like September, in Gays, Illinois, is another comfortable autumn month, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 48.2°F (9°C). October comes with a decrease in the average high-temperature, falling from a warm 77.2°F (25.1°C) in September to a refreshing 64.2°F (17.9°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Gays, Illinois, with temperature in the range of an average low of 36.7°F (2.6°C) and an average high of 50.5°F (10.3°C). November brings a decrease in the average high-temperature, falling from October's comfortable 64.2°F (17.9°C) to a fresh 50.5°F (10.3°C). Weather in November »Weather in December
December, the first month of the winter in Gays, is also a wintry month, with an average temperature ranging between max 39.7°F (4.3°C) and min 28.8°F (-1.8°C). Setting in of December comes with a decrease in the average high-temperature, moving from a cool 50.5°F (10.3°C) in November to a cold 39.7°F (4.3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Gays, IL
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.5°F).
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure
Gays, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"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:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Gays, IL
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.1mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
9mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity
Gays, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Gays, IL
- Average rainfall in January:
0.79" - Average rainfall in February:
0.51" - Average rainfall in March:
0.87" - Average rainfall in April:
1.3" - Average rainfall in May:
1.18" - Average rainfall in June:
0.98"
- Average rainfall in July:
1.18" - Average rainfall in August:
0.91" - Average rainfall in September:
0.51" - Average rainfall in October:
0.87" - Average rainfall in November:
0.51" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is April (1.3").
The driest months (with the least rainfall) are February, September and November (0.51").
Average rainfall days
Gays, IL
- Average rainfall days in January:
6.6 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
12.2 days - Average rainfall days in May:
13.5 days - Average rainfall days in June:
10.3 days
- Average rainfall days in July:
12 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
8.6 days - Average rainfall days in October:
7.8 days - Average rainfall days in November:
6.6 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Gays, IL
The month with the highest snowfall is December (0.87").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days
Gays, IL
- Average snowfall days in January:
4.2 days - Average snowfall days in February:
5.3 days - Average snowfall days in March:
2.2 days - Average snowfall days in April:
0.4 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:
1.3 days - Average snowfall days in December:
3.4 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Gays, IL
- Average daylight in January:
9h and 48min - 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:
14h and 54min
- Average daylight in July:
14h and 36min - 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: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
4h and 24min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 12min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 12min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Gays, IL
- Average sunshine days in January:
22.2 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
17.2 days - Average sunshine days in April:
15.5 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
15.9 days - Average sunshine days in September:
18.5 days - Average sunshine days in October:
21.4 days - Average sunshine days in November:
21.3 days - Average sunshine days in December:
21.3 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is May (13.8 days).
Average UV index
Gays, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Gays, IL
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility
Gays, IL
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).





