Climate and monthly weather forecastRockbridge, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Rockbridge, Illinois, with an average temperature varying between 35.2°F (1.8°C) and 22.3°F (-5.4°C). The coldest period is January, when temperatures fluctuate between an average high of 35.2°F (1.8°C) and a low of 22.3°F (-5.4°C). Weather in January »Weather in February
February, the last month of the winter in Rockbridge, is another cold month, with an average temperature varying between 25.9°F (-3.4°C) and 39.6°F (4.2°C). Rockbridge marks the onset of February with an average high-temperature of a still cold 39.6°F (4.2°C), a subtle shift from January's 35.2°F (1.8°C). Weather in February »Weather in March
March, the first month of the spring in Rockbridge, is a cool month, with an average temperature ranging between min 36.5°F (2.5°C) and max 52.3°F (11.3°C). The start of March signals an increase in the average high-temperature, moving from an icy 39.6°F (4.2°C) in February to a cool 52.3°F (11.3°C). Weather in March »Weather in April
April in Rockbridge, Illinois, is an enjoyable spring month, with temperature in the range of an average high of 63.9°F (17.7°C) and an average low of 46.2°F (7.9°C). April's arrival sees a rise in the average high-temperature, jumping from March's cool 52.3°F (11.3°C) to a refreshing 63.9°F (17.7°C). Weather in April »Weather in May
May, the last month of the spring in Rockbridge, is a warm month, with an average temperature fluctuating between 56.1°F (13.4°C) and 73.6°F (23.1°C). The shift from April to May brings an increase in the average high-temperature, moving from a refreshing 63.9°F (17.7°C) to a moderately hot 73.6°F (23.1°C). Weather in May »Weather in June
The first month of the summer, June, is still a warm month in Rockbridge, Illinois, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 82.2°F (27.9°C). Rockbridge's transition into June is noticed by a slight rise in the average high-temperature, advancing from 73.6°F (23.1°C) in May to a still moderately hot 82.2°F (27.9°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Rockbridge, Illinois, with an average temperature fluctuating between 67.3°F (19.6°C) and 84.4°F (29.1°C). Rockbridge witnesses the warmest weather in July, with temperatures averaging a high of 84.4°F (29.1°C) and a low of 67.3°F (19.6°C). For most parts of July, the heat index is evaluated at a torrid 95°F (35°C). Weather in July »Weather in August
August, the last month of the summer in Rockbridge, is also a moderately hot month, with an average temperature fluctuating between 83.5°F (28.6°C) and 65.5°F (18.6°C). August denotes a minimal variation in the average high-temperature to a still moderately hot 83.5°F (28.6°C) from July's 84.4°F (29.1°C). Weather in August »Weather in September
September, the first month of the autumn in Rockbridge, is still a warm month, with an average temperature varying between 78.3°F (25.7°C) and 59.2°F (15.1°C). Rockbridge greets September with an average high-temperature of a still moderately hot 78.3°F (25.7°C), marking a slight deviation from the preceding month. Weather in September »Weather in October
October, like September, in Rockbridge, Illinois, is another refreshing autumn month, with an average temperature ranging between min 47.8°F (8.8°C) and max 64.8°F (18.2°C). The start of October involves a temperature drop, moving from a moderately hot 78.3°F (25.7°C) in September to a comfortable 64.8°F (18.2°C). Weather in October »Weather in November
November, the last month of the autumn in Rockbridge, is another cool month, with temperature in the range of an average high of 51.6°F (10.9°C) and an average low of 36.5°F (2.5°C). Rockbridge observes a minor decrease in the average high-temperature with the arrival of November, falling from October's enjoyable 64.8°F (18.2°C) to a fresh 51.6°F (10.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Rockbridge, Illinois, with an average temperature fluctuating between 40.5°F (4.7°C) and 28.6°F (-1.9°C). December brings a decrease in the average high-temperature, shifting from a cool 51.6°F (10.9°C) in November to an icy 40.5°F (4.7°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
In Rockbridge, January is known for its average lowest temperatures, reaching a high of 35.2°F (1.8°C) and a low of 22.3°F (-5.4°C).
In Rockbridge, during the entire year, the rain falls for 120.6 days and collects up to 14.17" (360mm) of precipitation.
Months with snowfall are January through March, November and December.
In Rockbridge, during the entire year, snow falls for 19.1 days and aggregates up to 3.82" (97mm) of snow.
January has the least sunshine of the year in Rockbridge, Illinois, with an average of 4.5h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the month with the most snowfall. Snow falls for 5.8 days and accumulates 1.34" (34mm) 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.
In Rockbridge, Illinois, snow does not fall in April through October.
The month with the most rainfall in Rockbridge, Illinois, is June, when the rain falls for 12.7 days and typically aggregates up to 1.93" (49mm) of precipitation.
June has the longest days of the year in Rockbridge, with an average of 14h and 54min of daylight.
June and July, with an average of 10.4h of sunshine, are months with the most sunshine in Rockbridge, Illinois.
The months with the highest UV index in Rockbridge, Illinois, are June through August, with an average maximum UV index of 6.
Rockbridge's warmest temperatures are experienced in July, with average high temperatures of 84.4°F (29.1°C) and lows of 67.3°F (19.6°C).
July is the most humid month in Rockbridge, with an average relative humidity of 81%.
October is the least humid month, with an average relative humidity of 71%.
The month with the least rainfall is November, when the rain falls for 7.4 days and typically collects 0.67" (17mm) of precipitation.
With an average of 9h and 30min of daylight, December has the shortest days of the year in Rockbridge.
Average temperature
Rockbridge, IL
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.2°F).
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure
Rockbridge, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Rockbridge, IL
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.6mph - Average wind speed in May:
7.7mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6.5mph - Average wind speed in October:
8.3mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity
Rockbridge, IL
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Rockbridge, IL
- Average rainfall in January:
0.71" - Average rainfall in February:
0.75" - Average rainfall in March:
1.06" - Average rainfall in April:
1.5" - Average rainfall in May:
1.69" - Average rainfall in June:
1.93"
The wettest month (with the highest rainfall) is June (1.93").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days
Rockbridge, IL
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.7 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
12.4 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
12.7 days
- Average rainfall days in July:
13.6 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
6.4 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (5.6 days).
Average snowfall
Rockbridge, IL
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Rockbridge, IL
- Average snowfall days in January:
6 days - Average snowfall days in February:
5.8 days - Average snowfall days in March:
2.2 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 days - Average snowfall days in December:
3.7 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Rockbridge, IL
- Average daylight in January:
9h and 48min - 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 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Rockbridge, IL
- Average sunshine days in January:
20.5 days - Average sunshine days in February:
17 days - Average sunshine days in March:
17.8 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
13.1 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
12.5 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
20.9 days - Average sunshine days in November:
20.6 days - Average sunshine days in December:
21.7 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is June (12.4 days).
Average UV index
Rockbridge, 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
Rockbridge, IL
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility
Rockbridge, 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).
