Climate and monthly weather forecastSaint Anne, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Saint Anne, Illinois, with an average temperature varying between 30°F (-1.1°C) and 18.5°F (-7.5°C). With average high temperatures of 30°F (-1.1°C) and lows of 18.5°F (-7.5°C), January is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is an icy month in Saint Anne, Illinois, with an average temperature varying between 21.4°F (-5.9°C) and 34.2°F (1.2°C). The advent of February sees the average high-temperature at a cold 34.2°F (1.2°C), subtly shifted from January's 30°F (-1.1°C). Weather in February »Weather in March
March, the first month of the spring in Saint Anne, is a frosty month, with an average temperature varying between 32.9°F (0.5°C) and 47.1°F (8.4°C). March's arrival brings a change in high-temperatures, moving from an icy 34.2°F (1.2°C) in February to a chilly 47.1°F (8.4°C). Weather in March »Weather in April
April is a mild spring month in Saint Anne, Illinois, with an average temperature fluctuating between 58.6°F (14.8°C) and 42.6°F (5.9°C). Saint Anne's weather in April presents a rise in the average high-temperature, moving from a chilly 47.1°F (8.4°C) in March to a moderate 58.6°F (14.8°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Saint Anne, Illinois, with an average temperature varying between 54°F (12.2°C) and 70.7°F (21.5°C). With the onset of May, Saint Anne experiences a temperature shift, with the average high-temperature moving from a moderate 58.6°F (14.8°C) in April to a pleasant 70.7°F (21.5°C). Weather in May »Weather in June
June, the first month of the summer in Saint Anne, is a moderately hot month, with an average temperature fluctuating between 79.2°F (26.2°C) and 61.9°F (16.6°C). June showcases a minor temperature ascent, adjusting from May's agreeable 70.7°F (21.5°C) to a warm 79.2°F (26.2°C). Weather in June »Weather in July
July, like June, in Saint Anne, Illinois, is a moderately hot summer month, with an average temperature ranging between max 81.1°F (27.3°C) and min 64.2°F (17.9°C). Saint Anne records the warmest temperatures in July, averaging a high of 81.1°F (27.3°C) and a low of 64.2°F (17.9°C). In July, the heat index is calculated to be a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Saint Anne, Illinois, with an average temperature fluctuating between 62.6°F (17°C) and 79.7°F (26.5°C). The transition from July to August brings an average high-temperature of a still moderately hot 79.7°F (26.5°C), barely different from July's 81.1°F (27.3°C). Weather in August »Weather in September
September, the first month of the autumn in Saint Anne, is still a warm month, with an average temperature fluctuating between 74.8°F (23.8°C) and 56.8°F (13.8°C). The shift to September signals an average high-temperature of a still moderately hot 74.8°F (23.8°C), subtly varied from August's 79.7°F (26.5°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Saint Anne, Illinois, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 61.7°F (16.5°C). October brings a drop in Saint Anne's average high-temperature, falling from a warm 74.8°F (23.8°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Saint Anne, Illinois, with an average temperature ranging between min 34.5°F (1.4°C) and max 47.3°F (8.5°C). As Saint Anne welcomes November, there is a noticeable shift in the average high-temperature, dropping from October's enjoyable 61.7°F (16.5°C) to a chilly 47.3°F (8.5°C). Weather in November »Weather in December
December, the first month of the winter in Saint Anne, is still a cold month, with an average temperature ranging between max 36.1°F (2.3°C) and min 25.7°F (-3.5°C). December's arrival correlates with a reduction in the average high-temperature, down from a frosty 47.3°F (8.5°C) in November to an icy 36.1°F (2.3°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 tends to be the coldest month, with temperatures averaging a daily high of 30°F (-1.1°C) and a low of 18.5°F (-7.5°C).
Throughout the year, there are 132 rainfall days, and 15.16" (385mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
January is the month with the most snowfall in Saint Anne, Illinois. Snow falls for 10.3 days and accumulates 1.42" (36mm) of snow.
In Saint Anne, Illinois, during the entire year, snow falls for 36.5 days and aggregates up to 5.28" (134mm) of snow.
With an average of 3.7h of sunshine, January has the least sunshine of the year.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Saint Anne, Illinois.
February is the month with the least rainfall. Rain falls for 5.1 days and accumulates 0.67" (17mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
May is the month with the most rainfall. Rain falls for 15.6 days and accumulates 2.2" (56mm) of precipitation.
In Saint Anne, snow does not fall in May through October.
The month with the longest days is June, with an average of 15h and 6min of daylight.
June through August, with an average of 9.8h of sunshine, are months with the most sunshine.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
July is the warmest month, with the temperature often reaching an average high of 81.1°F (27.3°C) and an average low of 64.2°F (17.9°C).
July is the most humid month in Saint Anne, Illinois, with an average relative humidity of 84%.
With an average relative humidity of 72%, October is the least humid month in Saint Anne, Illinois.
The month with the shortest days in Saint Anne, Illinois, is December, with an average of 9h and 18min of daylight.
Average temperature
Saint Anne, IL
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Saint Anne, IL
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.1"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:
29.92"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:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Saint Anne, IL
- Average wind speed in January:
10.1mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.5mph - 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:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Saint Anne, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Saint Anne, IL
- Average rainfall in January:
0.79" - Average rainfall in February:
0.67" - Average rainfall in March:
0.98" - Average rainfall in April:
1.57" - Average rainfall in May:
2.2" - Average rainfall in June:
1.81"
- Average rainfall in July:
1.61" - Average rainfall in August:
1.61" - Average rainfall in September:
1.1" - Average rainfall in October:
1.18" - Average rainfall in November:
0.83" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days
Saint Anne, IL
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
15.6 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
10 days - Average rainfall days in November:
8.4 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (5.1 days).
Average snowfall
Saint Anne, IL
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Saint Anne, IL
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
9.1 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
1.3 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:
0.2 days - Average snowfall days in November:
2.8 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Anne, IL
- Average daylight in January:
9h and 36min - 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 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - 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 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 42min - Average sunshine in May:
8h and 54min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
9h and 48min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 12min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Saint Anne, IL
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
15 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (10.7 days).
Average UV index
Saint Anne, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Saint Anne, IL
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Saint Anne, 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).
