Climate and monthly weather forecastRossville, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Rossville, Illinois, is a freezing cold winter month, with an average temperature ranging between max 31.5°F (-0.3°C) and min 19.8°F (-6.8°C). Rossville's coldest month, January, registers temperatures that range from a high of 31.5°F (-0.3°C) to a low of 19.8°F (-6.8°C). Weather in January »Weather in February
February, the last month of the winter in Rossville, is an icy month, with an average temperature varying between 23.4°F (-4.8°C) and 36°F (2.2°C). Rossville experiences a transition to a wintry 36°F (2.2°C) in average high-temperatures with the arrival of February, not greatly differing from January's 31.5°F (-0.3°C). Weather in February »Weather in March
March, the first month of the spring in Rossville, is a frosty month, with an average temperature ranging between min 34.3°F (1.3°C) and max 48.9°F (9.4°C). The arrival of March brings a temperature shift, with the average high-temperature escalating from a wintry 36°F (2.2°C) in February to a chilly 48.9°F (9.4°C). Weather in March »Weather in April
April is a mild spring month in Rossville, Illinois, with an average temperature fluctuating between 60.4°F (15.8°C) and 44.6°F (7°C). April brings a rise in the average high-temperature, transitioning from March's frosty 48.9°F (9.4°C) to a moderate 60.4°F (15.8°C). Weather in April »Weather in May
May, the last month of the spring in Rossville, is an agreeable month, with an average temperature fluctuating between 71.8°F (22.1°C) and 55°F (12.8°C). With the onset of May, Rossville's average high-temperature experiences a rise, moving from April's mild 60.4°F (15.8°C) to an agreeable 71.8°F (22.1°C). Weather in May »Weather in June
June, the first month of the summer in Rossville, is a warm month, with an average temperature ranging between min 63.1°F (17.3°C) and max 79.5°F (26.4°C). Observing a minor shift, the average high-temperature during June adjusts from May's pleasant 71.8°F (22.1°C) to a warm 79.5°F (26.4°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Rossville, Illinois, with an average temperature fluctuating between 81.1°F (27.3°C) and 64.4°F (18°C). Rossville's warmest month, July, generally records average temperatures ranging from a high of 81.1°F (27.3°C) to a low of 64.4°F (18°C). For most parts of July, the heat index is estimated at a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Rossville, Illinois, with an average temperature varying between 80.2°F (26.8°C) and 63°F (17.2°C). Rossville's weather in August, with an average high-temperature of a still moderately hot 80.2°F (26.8°C), subtly shifts from July's 81.1°F (27.3°C). Weather in August »Weather in September
September, the first month of the autumn in Rossville, is still a warm month, with an average temperature ranging between max 75.6°F (24.2°C) and min 57.6°F (14.2°C). The beginning of September reveals an average high-temperature of a still moderately hot 75.6°F (24.2°C), showing minimal deviation from the previous month. Weather in September »Weather in October
October, like September, in Rossville, Illinois, is another comfortable autumn month, with temperature in the range of an average high of 62.8°F (17.1°C) and an average low of 46.9°F (8.3°C). In October, the meteorological conditions alter, with the average high-temperature shifting from a warm 75.6°F (24.2°C) in September to a refreshing 62.8°F (17.1°C). Weather in October »Weather in November
November, the last month of the autumn in Rossville, is also a frosty month, with an average temperature varying between 35.4°F (1.9°C) and 48.4°F (9.1°C). November's arrival signals a significant decrease in average high-temperatures, falling from October's refreshing 62.8°F (17.1°C) to a frosty 48.4°F (9.1°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Rossville, Illinois, with an average temperature ranging between max 37.6°F (3.1°C) and min 27.3°F (-2.6°C). A shift in Rossville's weather is observed as November turns into December, with the average high temperature reducing from a frosty 48.4°F (9.1°C) to an icy 37.6°F (3.1°C). Weather in December »Updated: Jun 26, 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, 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.
In Rossville, during the entire year, the rain falls for 146.3 days and collects up to 22.76" (578mm) of precipitation.
Months with snowfall are January through April, November and December.
Throughout the year, there are 34.2 snowfall days, and 7.8" (198mm) of snow is accumulated.
With an average of 3.9h of sunshine, January has the least sunshine of the year.
February is the month with the least rainfall. Rain falls for 6.7 days and accumulates 1.18" (30mm) of precipitation.
February is the month with the most snowfall. Snow falls for 8.8 days and accumulates 2.32" (59mm) 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 May, when the rain falls for 16.6 days and typically aggregates up to 2.76" (70mm) of precipitation.
May through October are months without snowfall.
The month with the longest days is June, with an average of 15h and 0min of daylight.
The month with the most sunshine is June, with an average of 10h of sunshine.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
The temperatures reach their highest averages in July, with highs of 81.1°F (27.3°C) and lows of 64.4°F (18°C).
The most humid month is July, with an average relative humidity of 85%.
With an average relative humidity of 72%, October is the least humid month.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Rossville, IL
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Rossville, 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:
30.11"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
Rossville, IL
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.7mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.2mph - Average wind speed in October:
9.2mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Rossville, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Rossville, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.18" - Average rainfall in March:
2.09" - Average rainfall in April:
2.72" - Average rainfall in May:
2.76" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.13" - Average rainfall in August:
2.13" - Average rainfall in September:
1.3" - Average rainfall in October:
1.73" - Average rainfall in November:
1.38" - Average rainfall in December:
1.26"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days
Rossville, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.7 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
16.6 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
11.9 days - Average rainfall days in November:
8.2 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (6.7 days).
Average snowfall
Rossville, IL
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Rossville, IL
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
4.4 days - Average snowfall days in April:
1.1 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:
0.2 days - Average snowfall days in November:
1.9 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Rossville, 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 18min
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 54min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Rossville, IL
- Average sunshine days in January:
15.9 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
15.1 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
12.1 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
17.1 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
15.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.5 days).
Average UV index
Rossville, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Rossville, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are June, August and September (Cloud cover 33).
Average visibility
Rossville, 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).
