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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, in Roberts, Illinois, is another subzero cold winter month, with an average temperature ranging between min 19.8°F (-6.8°C) and max 31.5°F (-0.3°C). January, with its average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.8°F (-6.8°C), holds the record as the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Roberts, is a wintry month, with an average temperature varying between 23.2°F (-4.9°C) and 35.8°F (2.1°C). With February's advent, Roberts sees an average high-temperature of an icy 35.8°F (2.1°C), subtly shifted from January's 31.5°F (-0.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Roberts, Illinois, with an average temperature ranging between min 34.3°F (1.3°C) and max 48.7°F (9.3°C). March brings a rise in the average high-temperature, transitioning from February's icy 35.8°F (2.1°C) to a frosty 48.7°F (9.3°C). Weather in March »
Weather in April
April is a refreshing spring month in Roberts, Illinois, with an average temperature ranging between min 44.4°F (6.9°C) and max 60.4°F (15.8°C). The commencement of April sees a shift in the average high-temperature, moving from a frosty 48.7°F (9.3°C) in March to a mild 60.4°F (15.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Roberts, Illinois, with an average temperature ranging between min 55.4°F (13°C) and max 71.8°F (22.1°C). With the onset of May, Roberts's average high-temperature sees a rise, moving from April's moderate 60.4°F (15.8°C) to an agreeable 71.8°F (22.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Roberts, Illinois, with an average temperature ranging between min 63°F (17.2°C) and max 79.9°F (26.6°C). The onset of June marks a slight increase 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, the same as June, is another warm summer month in Roberts, Illinois, with an average temperature fluctuating between 80.8°F (27.1°C) and 64.6°F (18.1°C). The temperatures reach their highest averages in July, with highs of 80.8°F (27.1°C) and lows of 64.6°F (18.1°C). The heat index in July is appraised at a hot 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Roberts, is also a moderately hot month, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 63.1°F (17.3°C). August is marked by an average high-temperature of a still warm 80.2°F (26.8°C), almost identical to the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Roberts, Illinois, with an average temperature varying between 75.7°F (24.3°C) and 57.4°F (14.1°C). The arrival of September is marked by an average high-temperature of a still warm 75.7°F (24.3°C), bearing a close resemblance to August. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Roberts, Illinois, with an average temperature ranging between min 47.1°F (8.4°C) and max 62.6°F (17°C). The average high-temperature drops in October, from September's moderately hot 75.7°F (24.3°C) to an enjoyable 62.6°F (17°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Roberts, Illinois, with an average temperature fluctuating between 48.2°F (9°C) and 35.2°F (1.8°C). With the onset of November, Roberts experiences a noticeable temperature shift, with the average high-temperature receding from an enjoyable 62.6°F (17°C) in October to a frosty 48.2°F (9°C). Weather in November »
Weather in December
December, the first month of the winter in Roberts, is also a wintry month, with an average temperature fluctuating between 27.1°F (-2.7°C) and 37.2°F (2.9°C). December's onset corresponds with a shift in the average high-temperature, moving from a chilly 48.2°F (9°C) in November to an icy 37.2°F (2.9°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
What part of the year is the coldest in Roberts?
In Roberts, January is the month with the lowest recorded average temperatures, measuring a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C).
How many days does it rain in Roberts?
Throughout the year, in Roberts, Illinois, there are 139.8 rainfall days, and 22.05" (560mm) of precipitation is accumulated.
When does it snow in Roberts?
January through April, November and December are months with snowfall.
What is the snowiest month in Roberts?
The month with the most snowfall is January, when snow falls for 10.4 days and typically aggregates up to 2.83" (72mm) of snow.
How many days does it snow in Roberts?
In Roberts, during the entire year, snow falls for 29.9 days and aggregates up to 9.09" (231mm) of snow.
What is the month with the least sunshine in Roberts?
With an average of 3.8h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index in Roberts?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Roberts, Illinois.
What is the driest month in Roberts?
February and December are months with the least rain in Roberts when the rain falls for 6 days and typically aggregates up to 1.14" (29mm) of rain.
When is Daylight Saving Time (DST) in Roberts?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Roberts, 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 in Roberts?
The month with the most rainfall in Roberts, Illinois, is May, when the rain falls for 17.4 days and typically aggregates up to 2.91" (74mm) of precipitation.
When it does not snow in Roberts?
In Roberts, snow does not fall in May through October.
When are the longest days in Roberts?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month has the most sunshine in Roberts?
June has the most sunshine of the year, with an average of 9.9h of sunshine.
When is the highest UV index in Roberts?
The months with the highest UV index in Roberts are June and July, with an average maximum UV index of 6.
What time of the year is the hottest in Roberts?
Roberts's warmest month, July, registers temperatures that range from a high of 80.8°F (27.1°C) to a low of 64.6°F (18.1°C).
What is the most humid month in Roberts?
With an average relative humidity of 85%, July is the most humid month in Roberts.
What is the least humid month in Roberts?
October is the least humid month in Roberts, Illinois, with an average relative humidity of 71%.
What is the month with the shortest days in Roberts?
With an average of 9h and 18min of daylight, December has the shortest days of the year in Roberts.
Average temperature
Roberts, IL
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Roberts, 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:
29.94"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:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Roberts, IL
- Average wind speed in January:
10.8mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.2mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity
Roberts, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Roberts, IL
- Average rainfall in January:
1.26" - Average rainfall in February:
1.14" - Average rainfall in March:
1.81" - Average rainfall in April:
2.52" - Average rainfall in May:
2.91" - Average rainfall in June:
2.6"
- Average rainfall in July:
2.28" - Average rainfall in August:
1.93" - Average rainfall in September:
1.38" - Average rainfall in October:
1.73" - Average rainfall in November:
1.34" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is May (2.91").
The driest months (with the least rainfall) are February and December (1.14").
Average rainfall days
Roberts, IL
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
6 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
8.1 days - Average rainfall days in December:
7.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.8 days).
Average snowfall
Roberts, IL
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Roberts, IL
- Average snowfall days in January:
10.4 days - Average snowfall days in February:
7.1 days - Average snowfall days in March:
3.5 days - Average snowfall days in April:
0.6 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:
0.3 days - Average snowfall days in November:
1.7 days - Average snowfall days in December:
6.3 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Roberts, 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 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Roberts, IL
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
10.6 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
16 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
18.3 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (10.6 days).
Average UV index
Roberts, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Roberts, IL
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility
Roberts, 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).
Roberts, Illinois, USA
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