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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, is another cold winter month in Olmsted, Illinois, with an average temperature fluctuating between 41.2°F (5.1°C) and 28.4°F (-2°C). January is Olmsted's coldest month, registering average high temperatures of 41.2°F (5.1°C) and lows of 28.4°F (-2°C). Weather in January »
Weather in February
February, the last month of the winter in Olmsted, is a frosty month, with an average temperature varying between 31.8°F (-0.1°C) and 45.7°F (7.6°C). Olmsted measures an average high-temperature of a frosty 45.7°F (7.6°C) in February, nearly consistent with the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a mild month in Olmsted, Illinois, with an average temperature fluctuating between 56.8°F (13.8°C) and 40.6°F (4.8°C). As Olmsted transitions into March, a rise in the average high-temperature is observed, moving from a frosty 45.7°F (7.6°C) in February to a mild 56.8°F (13.8°C). Weather in March »
Weather in April
April in Olmsted, Illinois, is an enjoyable spring month, with an average temperature fluctuating between 67.6°F (19.8°C) and 50.2°F (10.1°C). April marks a rise in the average high-temperature, moving from March's moderate 56.8°F (13.8°C) to a comfortable 67.6°F (19.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Olmsted, Illinois, with temperature in the range of an average low of 59.5°F (15.3°C) and an average high of 76.6°F (24.8°C). As May arrives, Olmsted's weather shows an increase in high-temperatures, moving from April's enjoyable 67.6°F (19.8°C) to a moderately hot 76.6°F (24.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a hot month in Olmsted, Illinois, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 86°F (30°C). June's arrival brings a temperature shift, moving from a moderately hot 76.6°F (24.8°C) in May to a hot 86°F (30°C). Weather in June »
Weather in July
July, like June, is a hot summer month in Olmsted, Illinois, with an average temperature ranging between max 88.2°F (31.2°C) and min 69.8°F (21°C). Olmsted experiences its highest temperatures in July, with an average peak of 88.2°F (31.2°C) and a low of 69.8°F (21°C). In July, the heat index is appraised at a scorching 104°F (40°C). Weather in July »
Weather in August
August, the last month of the summer in Olmsted, is another hot month, with an average temperature ranging between min 67.5°F (19.7°C) and max 86.4°F (30.2°C). Transitioning into August, Olmsted records an average high-temperature of a still tropical 86.4°F (30.2°C), almost identical to July's 88.2°F (31.2°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Olmsted, Illinois, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 81.5°F (27.5°C). With the arrival of September, Olmsted's average high-temperature registers at a moderately hot 81.5°F (27.5°C), indicating a subtle variation from the previous month. Weather in September »
Weather in October
October, the same as September, in Olmsted, Illinois, is an agreeable autumn month, with an average temperature fluctuating between 68.9°F (20.5°C) and 51.1°F (10.6°C). As September shifts into October, a slight alteration in temperatures is observed, with average highs reducing from a moderately hot 81.5°F (27.5°C) to an agreeable 68.9°F (20.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another mild month in Olmsted, Illinois, with an average temperature varying between 55.4°F (13°C) and 40.1°F (4.5°C). The average high-temperature decreases in November, shifting from an agreeable 68.9°F (20.5°C) in October to a refreshing 55.4°F (13°C). Weather in November »
Weather in December
December, the first month of the winter in Olmsted, is still a chilly month, with an average temperature fluctuating between 33.8°F (1°C) and 45.5°F (7.5°C). The arrival of December signals a shift in temperature, down from a mild 55.4°F (13°C) in November to a chilly 45.5°F (7.5°C). Weather in December »
Updated: Aug 11, 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
What month is the coldest?
With average temperatures fluctuating between a high of 41.2°F (5.1°C) and a low of 28.4°F (-2°C), January stands out as the coldest month.
How much does it rain?
Throughout the year, there are 156.3 rainfall days, and 36.65" (931mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall.
How many days does it snow?
Throughout the year, there are 11.5 snowfall days, and 4.88" (124mm) of snow is accumulated.
What are the months with the lowest UV index?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
What are the most humid months?
The months with the highest humidity are February, March, May and December, with an average relative humidity of 78%.
When does it snow the most?
The month with the most snowfall in Olmsted is February, when snow falls for 3.8 days and typically aggregates up to 1.5" (38mm) of snow.
What is the month with the least sunshine?
With an average of 4.7h of sunshine, February has the least sunshine of the year.
When is Daylight Saving Time (DST)?
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.
What is the wettest month?
April is the month with the most rainfall. Rain falls for 15.2 days and accumulates 4.21" (107mm) of precipitation.
When it does not snow in Olmsted?
May through September are months without snowfall.
What is the month with the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days?
June has the longest days of the year, with an average of 14h and 42min of daylight.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 10.7h of sunshine.
What is the hottest time of year?
Olmsted's temperatures peak on average in July, reaching 88.2°F (31.2°C) at their highest and 69.8°F (21°C) at their lowest.
What is the driest month?
September is the month with the least rainfall. Rain falls for 11.4 days and accumulates 1.42" (36mm) of precipitation.
What is the least humid month?
With an average relative humidity of 69%, October is the least humid month.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 42min of daylight.
Average temperature
Olmsted, IL
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure
Olmsted, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Olmsted, IL
- Average wind speed in January:
9.1mph - Average wind speed in February:
9.1mph - Average wind speed in March:
9.1mph - Average wind speed in April:
9mph - Average wind speed in May:
7.6mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Olmsted, IL
The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Olmsted, IL
- Average rainfall in January:
2.36" - Average rainfall in February:
3.58" - Average rainfall in March:
3.94" - Average rainfall in April:
4.21" - Average rainfall in May:
3.94" - Average rainfall in June:
2.95"
- Average rainfall in July:
2.83" - Average rainfall in August:
2.72" - Average rainfall in September:
1.42" - Average rainfall in October:
2.68" - Average rainfall in November:
3.11" - Average rainfall in December:
2.91"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days
Olmsted, IL
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
11.4 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).
Average snowfall
Olmsted, IL
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Olmsted, IL
- Average snowfall days in January:
3.4 days - Average snowfall days in February:
3.8 days - Average snowfall days in March:
1.3 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:
0.1 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Olmsted, IL
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 5min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 4min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Olmsted, IL
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
13.5 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
18.3 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index
Olmsted, 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 and December (UV index 2).
Average cloud cover
Olmsted, IL
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility
Olmsted, 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).
Olmsted, Illinois, USA
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