Climate and monthly weather forecastTrilla, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Trilla, Illinois, with an average temperature varying between 22.5°F (-5.3°C) and 34.5°F (1.4°C). January is the coldest month, exhibiting average temperatures of 34.5°F (1.4°C) at the peak and 22.5°F (-5.3°C) at the base. Weather in January »Weather in February
February, the last month of the winter in Trilla, is another cold month, with an average temperature fluctuating between 39.6°F (4.2°C) and 26.4°F (-3.1°C). The advent of February signifies a minor shift to an average high-temperature of a still cold 39.6°F (4.2°C), aligning closely with January. Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Trilla, Illinois, with an average temperature fluctuating between 36.3°F (2.4°C) and 51.4°F (10.8°C). The shift into March is marked by a rise in the average high-temperature, moving from February's wintry 39.6°F (4.2°C) to a cool 51.4°F (10.8°C). Weather in March »Weather in April
April in Trilla, Illinois, is an enjoyable spring month, with an average temperature fluctuating between 63°F (17.2°C) and 46.6°F (8.1°C). April's arrival coincides with a rise in the average high-temperature, moving from March's fresh 51.4°F (10.8°C) 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 Trilla, Illinois, with an average temperature varying between 56.8°F (13.8°C) and 73°F (22.8°C). In Trilla, stepping into May brings a temperature increase, moving up 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 Trilla, is a moderately hot month, with an average temperature varying between 64.9°F (18.3°C) and 81.1°F (27.3°C). June's onset witnesses a minor shift in the average high-temperature, moving from an agreeable 73°F (22.8°C) in May to a moderately hot 81.1°F (27.3°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Trilla, Illinois, with an average temperature varying between 82.9°F (28.3°C) and 66.4°F (19.1°C). During the warmest month, July, temperatures average a high of 82.9°F (28.3°C) and a low of 66.4°F (19.1°C). For July, the heat index is calculated to be a tropical 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Trilla, Illinois, with an average temperature varying between 64°F (17.8°C) and 81.7°F (27.6°C). The advent of August brings an average high-temperature of a still warm 81.7°F (27.6°C), exhibiting minor difference from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Trilla, is also a moderately hot month, with an average temperature fluctuating between 59.2°F (15.1°C) and 77.2°F (25.1°C). The average high-temperature during September is a still warm 77.2°F (25.1°C), almost matching the conditions of the preceding month. Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Trilla, Illinois, with an average temperature fluctuating between 48.2°F (9°C) and 64.2°F (17.9°C). Trilla in October demonstrates a small temperature transition, adjusting from an average high of a moderately hot 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 Trilla, 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). The shift to November brings a decrease in the average high-temperature, falling from a refreshing 64.2°F (17.9°C) in October to a cool 50.5°F (10.3°C). Weather in November »Weather in December
December, the first month of the winter in Trilla, is also an icy month, with an average temperature varying between 28.8°F (-1.8°C) and 39.7°F (4.3°C). In December, the average high-temperature decreases from a cool 50.5°F (10.3°C) in November to an icy 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
Trilla, 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
Trilla, 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
Trilla, 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
Trilla, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Trilla, 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
Trilla, 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
Trilla, 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
Trilla, 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
Trilla, 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 12min - 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
Trilla, 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
Trilla, 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
Trilla, 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
Trilla, 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).





