Climate and monthly weather forecastBismarck, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Bismarck, Illinois, is another subzero cold winter month, with an average temperature ranging between max 31.6°F (-0.2°C) and min 20.5°F (-6.4°C). January is the coldest month, exhibiting average temperatures of 31.6°F (-0.2°C) at the peak and 20.5°F (-6.4°C) at the base. Weather in January »Weather in February
February, the last month of the winter in Bismarck, is a cold month, with an average temperature varying between 37°F (2.8°C) and 23.9°F (-4.5°C). The arrival of February introduces a minor uplift in high-temperatures, adjusting from a subzero cold 31.6°F (-0.2°C) in January to a wintry 37°F (2.8°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Bismarck, Illinois, with an average temperature ranging between max 49.1°F (9.5°C) and min 34.9°F (1.6°C). As March arrives, a rise in the average high-temperature is observed, moving from an icy 37°F (2.8°C) in February to a frosty 49.1°F (9.5°C). Weather in March »Weather in April
April in Bismarck, Illinois, is a comfortable spring month, with temperature in the range of an average low of 45°F (7.2°C) and an average high of 61.2°F (16.2°C). The rise of average high-temperatures is seen in April, with an increase from a frosty 49.1°F (9.5°C) in March to a comfortable 61.2°F (16.2°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Bismarck, Illinois, with an average temperature ranging between max 71.8°F (22.1°C) and min 55°F (12.8°C). As Bismarck enters May, the average high-temperature increases from the an enjoyable 61.2°F (16.2°C) of April to an agreeable 71.8°F (22.1°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Bismarck, Illinois, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 63.3°F (17.4°C). The start of June brings a subtle rise in the average high-temperature, moving from a pleasant 71.8°F (22.1°C) in May to a warm 79.9°F (26.6°C). Weather in June »Weather in July
July, like June, in Bismarck, Illinois, is another warm summer month, with an average temperature fluctuating between 64.9°F (18.3°C) and 81.3°F (27.4°C). In Bismarck, July is the month with the highest recorded average temperatures, measuring a high of 81.3°F (27.4°C) and a low of 64.9°F (18.3°C). For most parts of July, the heat index is evaluated at a hot 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Bismarck, is also a moderately hot month, with an average temperature fluctuating between 80.6°F (27°C) and 63.3°F (17.4°C). The average high-temperature in August, at a still warm 80.6°F (27°C), reveals a modest deviation from July's 81.3°F (27.4°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Bismarck, Illinois, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 76.1°F (24.5°C). September is marked by an average high-temperature of a still moderately hot 76.1°F (24.5°C), almost identical to the preceding month. Weather in September »Weather in October
October, like September, in Bismarck, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 63.1°F (17.3°C) and 47.1°F (8.4°C). Onset of October comes with a temperature decline, the average high falling from a warm 76.1°F (24.5°C) in September to a comfortable 63.1°F (17.3°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Bismarck, Illinois, with an average temperature fluctuating between 48.9°F (9.4°C) and 35.6°F (2°C). November's arrival comes with a decrease in the average high-temperature, moving from an enjoyable 63.1°F (17.3°C) in October to a frosty 48.9°F (9.4°C). Weather in November »Weather in December
December, the first month of the winter in Bismarck, is also a wintry month, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 27.5°F (-2.5°C). The average high-temperature decreases in December, shifting from a frosty 48.9°F (9.4°C) in November to a cold 37.6°F (3.1°C). Weather in December »Updated: Aug 18, 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, noted for its average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 20.5°F (-6.4°C), is considered the coldest month.
Throughout the year, there are 151.8 rainfall days, and 25.63" (651mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
Throughout the year, in Bismarck, there are 35.2 snowfall days, and 8.82" (224mm) of snow is accumulated.
With an average of 4h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the least rainfall are February and September Rain falls for 6.6 days and accumulates 1.38" (35mm) of rain.
The month with the most snowfall is February, when snow falls for 8.9 days and typically aggregates up to 2.64" (67mm) of snow.
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.
The month with the most rainfall is April, when the rain falls for 15.3 days and typically aggregates up to 3.23" (82mm) of precipitation.
May through October are months without snowfall in Bismarck.
With an average of 15h and 0min of daylight, June has the longest days of the year.
The month with the most sunshine is June, with an average of 10.1h of sunshine.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
July, noted for its average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 64.9°F (18.3°C), is considered the warmest month.
With an average relative humidity of 84%, July is the most humid month.
October is the least humid month, with an average relative humidity of 72%.
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Bismarck, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Bismarck, IL
- Average pressure in January:
30.14"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:
29.96"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:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Bismarck, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.6mph - 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:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Bismarck, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Bismarck, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.38" - Average rainfall in March:
2.32" - Average rainfall in April:
3.23" - Average rainfall in May:
3.15" - Average rainfall in June:
2.91"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.24" - Average rainfall in September:
1.38" - Average rainfall in October:
2.05" - Average rainfall in November:
1.46" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days
Bismarck, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
8.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall
Bismarck, IL
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Bismarck, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.9 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:
2.5 days - Average snowfall days in December:
7.9 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Bismarck, IL
- Average daylight in January:
9h and 42min - 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:
15h and 0min
- Average daylight in July:
14h and 42min - 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: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 48min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Bismarck, IL
- Average sunshine days in January:
15 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
10 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
18 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index
Bismarck, 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, February, November and December (UV index 2).
Average cloud cover
Bismarck, IL
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility
Bismarck, 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).
