Climate and monthly weather forecastAnnapolis, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Annapolis, Illinois, with an average temperature varying between 23.4°F (-4.8°C) and 36°F (2.2°C). Annapolis's coldest temperatures are experienced in January, with average high temperatures of 36°F (2.2°C) and lows of 23.4°F (-4.8°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Annapolis, Illinois, with an average temperature fluctuating between 27.3°F (-2.6°C) and 41°F (5°C). The commencement of February introduces an average high-temperature of a still wintry 41°F (5°C), closely mirroring the preceding month. Weather in February »Weather in March
March, the first month of the spring in Annapolis, is a cool month, with an average temperature ranging between max 53.1°F (11.7°C) and min 36.7°F (2.6°C). A rise in the average high-temperature is observed during March, moving from a cold 41°F (5°C) in February to a fresh 53.1°F (11.7°C). Weather in March »Weather in April
April is an enjoyable spring month in Annapolis, Illinois, with an average temperature ranging between min 46.9°F (8.3°C) and max 64°F (17.8°C). Observing a rise in April, the average high-temperature goes from March's cool 53.1°F (11.7°C) to an enjoyable 64°F (17.8°C). Weather in April »Weather in May
May, the last month of the spring in Annapolis, is a moderately hot month, with an average temperature ranging between min 57.2°F (14°C) and max 73.8°F (23.2°C). The start of May brings a shift in the average high-temperature, increasing from April's enjoyable 64°F (17.8°C) to a moderately hot 73.8°F (23.2°C). Weather in May »Weather in June
June, the first month of the summer in Annapolis, is still a warm month, with an average temperature varying between 65.3°F (18.5°C) and 81.9°F (27.7°C). As May transitions into June, a subtle temperature shift is observed, with average highs adjusting from 73.8°F (23.2°C) to a still moderately hot 81.9°F (27.7°C). Weather in June »Weather in July
July, like June, in Annapolis, Illinois, is a moderately hot summer month, with an average temperature ranging between min 66.7°F (19.3°C) and max 83.8°F (28.8°C). July, known for its average high temperature of 83.8°F (28.8°C) and an average low temperature of 66.7°F (19.3°C), is the warmest month. For most parts of July, the heat index is computed to be a hot 93.2°F (34°C). Weather in July »Weather in August
August, the last month of the summer in Annapolis, is also a moderately hot month, with an average temperature fluctuating between 82.2°F (27.9°C) and 64.8°F (18.2°C). In August, the average high-temperature registers at a still moderately hot 82.2°F (27.9°C), nearly identical to July's 83.8°F (28.8°C). Weather in August »Weather in September
September, the first month of the autumn in Annapolis, is still a warm month, with an average temperature ranging between max 77.9°F (25.5°C) and min 59.5°F (15.3°C). Annapolis experiences a transition to a still warm 77.9°F (25.5°C) in average high-temperatures with the arrival of September, not greatly differing from August's 82.2°F (27.9°C). Weather in September »Weather in October
October, like September, in Annapolis, Illinois, is another comfortable autumn month, with an average temperature varying between 48.6°F (9.2°C) and 65.5°F (18.6°C). In October, the average high-temperature goes from a moderately hot 77.9°F (25.5°C) in September to an enjoyable 65.5°F (18.6°C). Weather in October »Weather in November
November, the last month of the autumn in Annapolis, is another cool month, with an average temperature fluctuating between 51.3°F (10.7°C) and 37.4°F (3°C). As October shifts into November, a slight alteration in temperatures is observed, with average highs reducing from a refreshing 65.5°F (18.6°C) to a fresh 51.3°F (10.7°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Annapolis, Illinois, with temperature in the range of an average high of 41°F (5°C) and an average low of 29.7°F (-1.3°C). December brings a drop in Annapolis's average high-temperature, falling from a fresh 51.3°F (10.7°C) in November to an icy 41°F (5°C). Weather in December »Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, marked by an average high-temperature of 36°F (2.2°C) and a low-temperature of 23.4°F (-4.8°C), is the coldest month in Annapolis.
Throughout the year, in Annapolis, Illinois, there are 147.2 rainfall days, and 27.87" (708mm) of precipitation is accumulated.
January through April, November and December are months with snowfall in Annapolis.
The month with the most snowfall in Annapolis is January, when snow falls for 6 days and typically aggregates up to 1.61" (41mm) of snow.
In Annapolis, Illinois, during the entire year, snow falls for 21.1 days and aggregates up to 5.16" (131mm) of snow.
January has the least sunshine of the year in Annapolis, with an average of 4.2h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Annapolis, 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.
April is the month with the most rainfall. Rain falls for 14.5 days and accumulates 4.13" (105mm) of precipitation.
May through October are months without snowfall.
May through August, with an average maximum UV index of 6, are months with the highest UV index in Annapolis.
The month with the longest days in Annapolis is June, with an average of 14h and 54min of daylight.
June has the most sunshine of the year, with an average of 10.3h of sunshine.
July, on average, is the warmest month in Annapolis, registering a high temperature of 83.8°F (28.8°C) and a low of 66.7°F (19.3°C).
July and August, with an average relative humidity of 81%, are most humid months in Annapolis, Illinois.
The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.46" (37mm) of precipitation.
With an average relative humidity of 71%, October is the least humid month in Annapolis, Illinois.
December has the shortest days of the year in Annapolis, with an average of 9h and 30min of daylight.
Average temperature
Annapolis, IL
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
Annapolis, IL
- Average pressure in January:
30.15"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:
29.97"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:
30.14"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
Annapolis, IL
- Average wind speed in January:
10.1mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.2mph
The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity
Annapolis, IL
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Annapolis, IL
- Average rainfall in January:
1.93" - Average rainfall in February:
1.5" - Average rainfall in March:
2.13" - Average rainfall in April:
4.13" - Average rainfall in May:
3.03" - Average rainfall in June:
2.8"
- Average rainfall in July:
2.64" - Average rainfall in August:
2.17" - Average rainfall in September:
1.46" - Average rainfall in October:
1.97" - Average rainfall in November:
1.89" - Average rainfall in December:
2.24"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days
Annapolis, IL
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
8.4 days - Average rainfall days in March:
12.9 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
13 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
9.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall
Annapolis, IL
The month with the highest snowfall is January (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Annapolis, IL
- Average snowfall days in January:
6 days - Average snowfall days in February:
5.2 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.3 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 days - Average snowfall days in November:
1.7 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Annapolis, IL
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - 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 30min
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 30min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
4h and 24min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Annapolis, IL
- Average sunshine days in January:
17 days - Average sunshine days in February:
14.2 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
18.7 days - Average sunshine days in November:
18.2 days - Average sunshine days in December:
16.6 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is May (10.8 days).
Average UV index
Annapolis, IL
The months with the highest UV index are May, 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
Annapolis, IL
The months with the most cloud cover are January and February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Annapolis, 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).
