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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 Savanna, Illinois, is a freezing cold winter month, with temperature in the range of an average high of 26.1°F and an average low of 13.5°F. Temperature readings reach their annual highs in January, averaging 26.1°F and a minimum average of 13.5°F. Weather in January »
Weather in February
February, the last month of the winter in Savanna, is also a subzero cold month, with an average temperature ranging between min 16.9°F and max 30.4°F. As February unfolds, the average high-temperature reaches a still freezing cold 30.4°F, hinting at a slight fluctuation from the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Savanna, Illinois, with an average temperature ranging between max 44.6°F and min 29.8°F. Savanna's transition into March is marked by a temperature shift, moving from a freezing cold 30.4°F in February to a frosty 44.6°F. Weather in March »
Weather in April
April is a refreshing spring month in Savanna, Illinois, with an average temperature ranging between max 56.7°F and min 40.6°F. The onset of April brings a rise in the average high-temperature, elevating from a frosty 44.6°F in March to a moderate 56.7°F. Weather in April »
Weather in May
May, the last month of the spring in Savanna, is an agreeable month, with temperature in the range of an average low of 51.6°F and an average high of 68.5°F. Savanna, Illinois, experiences a temperature shift with the start of May, with average high-temperatures moving from a moderate 56.7°F in April to an agreeable 68.5°F. Weather in May »
Weather in June
June, the first month of the summer in Savanna, is a warm month, with an average temperature varying between 77.4°F and 60.8°F. June's arrival signals a subtle increase in average high-temperatures, moving from May's pleasant 68.5°F to a warm 77.4°F. Weather in June »
Weather in July
July, like June, in Savanna, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 63.5°F and 80.1°F. July is the month when Savanna experiences its warmest temperatures, averaging a high of 80.1°F and a low of 63.5°F. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Savanna, Illinois, with an average temperature ranging between min 61.2°F and max 79.2°F. August registers an average high-temperature of a still moderately hot 79.2°F, slightly varied from July's 80.1°F. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Savanna, Illinois, with an average temperature varying between 73.4°F and 54.5°F. Savanna's transition into September involves a gentle shift in temperature, receding from a warm 79.2°F in August to a still moderately hot 73.4°F. Weather in September »
Weather in October
October, like September, is another mild autumn month in Savanna, Illinois, with temperature in the range of an average low of 43.5°F and an average high of 59.7°F. The average high-temperature decreases in October, shifting from a warm 73.4°F in September to a moderate 59.7°F. Weather in October »
Weather in November
November, the last month of the autumn in Savanna, is also a frosty month, with temperature in the range of an average high of 45.1°F and an average low of 31.6°F. Savanna's weather in November is marked by a clear decrease in the average high-temperature, moving down from October's refreshing 59.7°F to a frosty 45.1°F. Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Savanna, Illinois, with an average temperature fluctuating between 32.7°F and 22.5°F. The decrease of average high-temperatures is mild in December, with a decline from a frosty 45.1°F in November to a cold 32.7°F. Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Savanna?
January, with its high-temperature average of 26.1°F and a low-temperature average of 13.5°F, is the coldest month in Savanna, Illinois.
What is the most humid month in Savanna?
January is the most humid month in Savanna, Illinois, with an average relative humidity of 86%.
How much does it rain in Savanna?
In Savanna, during the entire year, the rain falls for 149.3 days and collects up to 29.76" of precipitation.
When does it snow in Savanna?
Months with snowfall in Savanna are January through May, October through December.
When does it snow the most in Savanna?
The month with the most snowfall is January, when snow falls for 11.7 days and typically aggregates up to 5.12" of snow.
How many days does it snow in Savanna?
In Savanna, Illinois, during the entire year, snow falls for 41.2 days and aggregates up to 16.73" of snow.
What is the month with the least sunshine in Savanna?
With an average of 3.7h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index in Savanna?
The months with the lowest UV index in Savanna, Illinois, are January and December, with an average maximum UV index of 1.
What is the driest month in Savanna?
The month with the least rainfall in Savanna, Illinois, is February, when the rain falls for 4.4 days and typically collects 1.38" of precipitation.
When is Daylight Saving Time (DST) in Savanna?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month in Savanna?
May is the month with the most rainfall. Rain falls for 18.5 days and accumulates 4.09" of precipitation.
When it does not snow in Savanna?
In Savanna, Illinois, snow does not fall in June through September.
When are the longest days in Savanna?
June has the longest days of the year in Savanna, Illinois, with an average of 15h and 12min of daylight.
What month is the hottest in Savanna?
July is the month when Savanna, Illinois, sees the average highest temperatures, with a high of 80.1°F and a low of 63.5°F.
What month has the most sunshine in Savanna?
The month with the most sunshine is July, with an average of 9.8h of sunshine.
When is the highest UV index in Savanna?
July is the month with the highest UV index in Savanna, Illinois, with an average maximum UV index of 6.
What is the least humid month in Savanna?
October is the least humid month in Savanna, with an average relative humidity of 74%.
What is the month with the shortest days in Savanna?
The month with the shortest days in Savanna, Illinois, is December, with an average of 9h and 12min of daylight.
Average temperature
Savanna, IL
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (26.1°F).
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure
Savanna, IL
- Average pressure in January:
30.12"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:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Savanna, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Savanna, IL
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Savanna, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.38" - Average rainfall in March:
1.89" - Average rainfall in April:
3.27" - Average rainfall in May:
4.09" - Average rainfall in June:
3.82"
- Average rainfall in July:
3.23" - Average rainfall in August:
2.17" - Average rainfall in September:
2.48" - Average rainfall in October:
2.68" - Average rainfall in November:
1.81" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days
Savanna, IL
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
4.4 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
16 days - Average rainfall days in May:
18.5 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
12.6 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (4.4 days).
Average snowfall
Savanna, IL
- Average snowfall in January:
5.12" - Average snowfall in February:
4.06" - Average snowfall in March:
2.01" - Average snowfall in April:
0.91" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Savanna, IL
- Average snowfall days in January:
11.7 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
6.2 days - Average snowfall days in April:
1.4 days - Average snowfall days in May:
0.1 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:
0.4 days - Average snowfall days in November:
3.3 days - Average snowfall days in December:
8.7 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Savanna, IL
- Average daylight in January:
9h and 3min - 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 4min - 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 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Savanna, IL
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
9.6 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
16 days - Average sunshine days in October:
15.8 days - Average sunshine days in November:
17.8 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (9.6 days).
Average UV index
Savanna, 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
Savanna, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Savanna, IL
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Savanna, Illinois, USA
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