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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
Climate and monthly weather forecast
Weather in January
January, the same as December, in Orion, Illinois, is another subzero cold winter month, with an average temperature fluctuating between -2°C and -8.8°C. January, with its high-temperature average of -2°C and a low-temperature average of -8.8°C, is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Orion, is a wintry month, with an average temperature varying between -6.7°C and 0.6°C. February experiences an average high-temperature of an icy 0.6°C, barely different from January's -2°C. Weather in February »
Weather in March
March, the first month of the spring in Orion, is a chilly month, with an average temperature ranging between min 0.2°C and max 8.3°C. The onset of March marks an increase in the average high-temperature, moving from an icy 0.6°C in February to a frosty 8.3°C. Weather in March »
Weather in April
April in Orion, Illinois, is a mild spring month, with an average temperature ranging between min 5.8°C and max 15.1°C. As Orion enters April, the average high-temperature increases from the a frosty 8.3°C of March to a moderate 15.1°C. Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Orion, Illinois, with an average temperature ranging between max 21.4°C and min 12°C. May brings a temperature change, with average high-temperatures moving from April's mild 15.1°C to a pleasant 21.4°C. Weather in May »
Weather in June
June, the first month of the summer in Orion, is a moderately hot month, with an average temperature fluctuating between 26.1°C and 16.8°C. June comes with a subtle rise, with the average high-temperature adjusting from a pleasant 21.4°C in May to a warm 26.1°C. Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Orion, Illinois, with temperature in the range of an average low of 18.3°C and an average high of 27.5°C. The highest temperatures are recorded in July, with averages reaching a high of 27.5°C and a low of 18.3°C. Throughout July, the heat index is estimated at a tropical 31°C. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Orion, Illinois, with an average temperature fluctuating between 17.2°C and 26.9°C. Orion's August showcases an average high-temperature of a still moderately hot 26.9°C, hardly distinct from July's 27.5°C. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Orion, Illinois, with an average temperature fluctuating between 24.1°C and 13.6°C. The onset of September brings with it an average high-temperature of a still warm 24.1°C, showing a negligible variation from the month before. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Orion, Illinois, with an average temperature fluctuating between 16.3°C and 7.3°C. The move into October indicates a reduction in the average high-temperature, down from September's warm 24.1°C to a comfortable 16.3°C. Weather in October »
Weather in November
November, the last month of the autumn in Orion, is also a frosty month, with an average temperature fluctuating between 8.3°C and 0.6°C. The beginning of November marks a clear shift in the average high-temperature, receding from October's refreshing 16.3°C to a chilly 8.3°C. Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Orion, Illinois, with an average temperature fluctuating between 1.5°C and -4.4°C. Orion experiences a temperature shift at the start of December, with average high-temperatures adjusting from a frosty 8.3°C in November to a wintry 1.5°C. Weather in December »
Updated: Jun 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
What is the coldest time of year?
In Orion, January is the month with the lowest recorded average temperatures, measuring a high of -2°C and a low of -8.8°C.
What is the most humid month?
The months with the highest humidity are January and July, with an average relative humidity of 83%.
How many days does it rain?
Throughout the year, there are 143.6 rainfall days, and 711mm of precipitation is accumulated.
When does it snow?
Months with snowfall in Orion are January through April, October through December.
When does it snow the most in Orion?
January is the month with the most snowfall. Snow falls for 11.2 days and accumulates 104mm of snow.
How much does it snow?
Throughout the year, there are 36.5 snowfall days, and 343mm of snow is accumulated.
What is the month with the least sunshine?
With an average of 4h of sunshine, January has the least sunshine of the year in Orion.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
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 rainiest month?
May is the month with the most rainfall. Rain falls for 18.2 days and accumulates 113mm of precipitation.
When it does not snow?
In Orion, snow does not fall in May through September.
When are the longest days?
June has the longest days of the year, with an average of 15h and 6min of daylight.
What is the hottest time of year in Orion?
The temperatures in Orion reach their highest averages in July, with highs of 27.5°C and lows of 18.3°C.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 10.2h of sunshine.
When is the highest UV index?
The month with the highest UV index is July, with an average maximum UV index of 6.
What is the least humid month?
The least humid month in Orion is October, with an average relative humidity of 71%.
What is the driest month?
December is the month with the least rainfall. Rain falls for 7.4 days and accumulates 32mm of precipitation.
What is the month with the shortest days?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Orion, IL
The warmest month (with the highest average high temperature) is July (27.5°C).
The month with the lowest average high temperature is January (-2°C).
The month with the highest average low temperature is July (18.3°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).
Average pressure
Orion, IL
- Average pressure in January:
1020.4mbar - Average pressure in February:
1019.9mbar - Average pressure in March:
1018.5mbar - Average pressure in April:
1013.7mbar - Average pressure in May:
1014.1mbar - Average pressure in June:
1012.6mbar
- Average pressure in July:
1014.7mbar - Average pressure in August:
1014.9mbar - Average pressure in September:
1016.7mbar - Average pressure in October:
1016.2mbar - Average pressure in November:
1019.2mbar - Average pressure in December:
1019.5mbar
The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is June (1012.6mbar).
Average wind speed
Orion, IL
- Average wind speed in January:
16.7km/h - Average wind speed in February:
16.8km/h - Average wind speed in March:
16.7km/h - Average wind speed in April:
17km/h - Average wind speed in May:
14.5km/h - Average wind speed in June:
12.6km/h
- Average wind speed in July:
10.9km/h - Average wind speed in August:
10.8km/h - Average wind speed in September:
12.6km/h - Average wind speed in October:
15.3km/h - Average wind speed in November:
16.6km/h - Average wind speed in December:
15.9km/h
The windiest month (with the highest average wind speed) is April (17km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity
Orion, IL
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Orion, IL
The wettest month (with the highest rainfall) is May (113mm).
The driest month (with the least rainfall) is December (32mm).
Average rainfall days
Orion, IL
- Average rainfall days in January:
5 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
12.1 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
15.4 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.1 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
7.4 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).
Average snowfall
Orion, IL
The month with the highest snowfall is January (104mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days
Orion, IL
- Average snowfall days in January:
11.2 days - Average snowfall days in February:
9.2 days - Average snowfall days in March:
4.8 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:
0.1 days - Average snowfall days in October:
0.6 days - Average snowfall days in November:
2.2 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight / Average sunshine
Orion, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
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 12min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 3min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Orion, IL
- Average sunshine days in January:
15.4 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
15.2 days - Average sunshine days in September:
17.8 days - Average sunshine days in October:
16.4 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
17.8 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (10.4 days).
Average UV index
Orion, IL
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Orion, IL
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Orion, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).