Climate and monthly weather forecastInverness, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Inverness, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 16.9°F (-8.4°C). In Inverness, the month of January is known for its lowest average temperatures, reaching a high of 27.9°F (-2.3°C) and a low of 16.9°F (-8.4°C). Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Inverness, Illinois, with an average temperature fluctuating between 31.5°F (-0.3°C) and 19.2°F (-7.1°C). As Inverness transitions into February, the average high-temperature stands at a still subzero cold 31.5°F (-0.3°C), offering little variation from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Inverness, is a frosty month, with an average temperature ranging between max 43.9°F (6.6°C) and min 30.6°F (-0.8°C). With the onset of March, Inverness sees a temperature rise, with the average high-temperature moving from February's subzero cold 31.5°F (-0.3°C) to a chilly 43.9°F (6.6°C). Weather in March »Weather in April
April in Inverness, Illinois, is a cool spring month, with temperature in the range of an average low of 39.6°F (4.2°C) and an average high of 54.9°F (12.7°C). Inverness sees an increase in the average high-temperature with the arrival of April, moving from March's frosty 43.9°F (6.6°C) to a fresh 54.9°F (12.7°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Inverness, Illinois, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 67.1°F (19.5°C). May's arrival brings a change in high-temperatures, moving from a cool 54.9°F (12.7°C) in April to a refreshing 67.1°F (19.5°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Inverness, Illinois, with temperature in the range of an average low of 60.3°F (15.7°C) and an average high of 76.8°F (24.9°C). Inverness experiences a temperature shift with the start of June, with average high-temperatures moving from a comfortable 67.1°F (19.5°C) in May to a moderately hot 76.8°F (24.9°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Inverness, Illinois, with an average temperature varying between 65.8°F (18.8°C) and 81.5°F (27.5°C). The average temperatures reach their apex in July, averaging 81.5°F (27.5°C) at the high end and 65.8°F (18.8°C) at the low end. During July, the heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Inverness, is also a moderately hot month, with an average temperature ranging between min 64.4°F (18°C) and max 80.1°F (26.7°C). During August, the average high-temperature is a still warm 80.1°F (26.7°C), maintaining a close resemblance to that of the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Inverness, Illinois, with an average temperature fluctuating between 57.9°F (14.4°C) and 73.2°F (22.9°C). September heralds a minor drop in average high-temperature, sliding from August's warm 80.1°F (26.7°C) to a pleasant 73.2°F (22.9°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Inverness, Illinois, with temperature in the range of an average high of 60.1°F (15.6°C) and an average low of 45.5°F (7.5°C). October brings a minor decrease, with the average high-temperature reducing from a pleasant 73.2°F (22.9°C) in September to a moderate 60.1°F (15.6°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Inverness, Illinois, with an average temperature ranging between min 33.4°F (0.8°C) and max 45.5°F (7.5°C). As November arrives, Inverness's weather displays a notable decrease in high-temperatures, falling from October's moderate 60.1°F (15.6°C) to a frosty 45.5°F (7.5°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Inverness, Illinois, with temperature in the range of an average low of 24.6°F (-4.1°C) and an average high of 34.3°F (1.3°C). The arrival of December signals a shift in temperature, down from a chilly 45.5°F (7.5°C) in November to a cold 34.3°F (1.3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Inverness, IL
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure
Inverness, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"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"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Inverness, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Inverness, IL
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Inverness, IL
- Average rainfall in January:
0.67" - Average rainfall in February:
0.75" - Average rainfall in March:
0.75" - Average rainfall in April:
1.54" - Average rainfall in May:
1.77" - Average rainfall in June:
1.61"
- Average rainfall in July:
1.61" - Average rainfall in August:
1.73" - Average rainfall in September:
1.14" - Average rainfall in October:
1.18" - Average rainfall in November:
0.63" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days
Inverness, IL
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
3.8 days - Average rainfall days in March:
9 days - Average rainfall days in April:
13 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
6.2 days - Average rainfall days in December:
4.6 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (3.8 days).
Average snowfall
Inverness, IL
- Average snowfall in January:
1.77" - Average snowfall in February:
1.81" - Average snowfall in March:
0.47" - Average snowfall in April:
1.22" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Inverness, IL
- Average snowfall days in January:
11.1 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0.1 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:
0.5 days - Average snowfall days in November:
3.3 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Inverness, IL
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
3h and 54min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Inverness, IL
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
16.2 days - Average sunshine days in March:
17.5 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
13.3 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
20.2 days - Average sunshine days in December:
20.1 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is July (12.1 days).
Average UV index
Inverness, 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 and December (UV index 1).
Average cloud cover
Inverness, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 31).
Average visibility
Inverness, 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).





