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What is the weather like in Swansea, IllinoisSwansea, Illinois monthly and yearly climate averages.

Swansea, Illinois Climate Averages

Monthly and yearly weather averages for Swansea, IllinoisWeather almanac for Swansea, IL. Swansea monthly weather averages.
Lat: 38.54N, Lon: 89.99W
Wx Zone: ILZ101Web Search
Swansea Weather Warning NWS WEATHER ALERT FOR THE SWANSEA, IL AREA - Issued: 344 AM CDT Sat May 8 2021 Swansea Weather Warning  

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There are currently no special weather statements for Swansea, Illinois.

Swansea Monthly Averages

12 Month Weather Scroll   °F Click to change Swansea weather to Imperial units.Click to change Swansea weather to Metric units. °C
January
February
March
April
May
June
July
August
September
October
November
December
Hi 37°F Lo 25°F Hi 41°F Lo 27°F Hi 54°F Lo 38°F Hi 64°F Lo 47°F Hi 74°F Lo 58°F Hi 84°F Lo 66°F Hi 86°F Lo 68°F Hi 84°F Lo 66°F Hi 79°F Lo 60°F Hi 66°F Lo 49°F Hi 53°F Lo 38°F Hi 42°F Lo 31°F
10 mph 10 mph 10 mph 9 mph 8 mph 7 mph 6 mph 6 mph 6 mph 8 mph 9 mph 9 mph
3.6 in 3.4 in 5.3 in 7.4 in 7.3 in 8 in 6.9 in 5.9 in 4.6 in 4.9 in 3.9 in 3.5 in
76% 77% 76% 77% 79% 77% 79% 79% 75% 70% 72% 76%
51% 50% 46% 41% 35% 24% 25% 25% 27% 32% 36% 47%
30.6 in 30.6 in 30.6 in 30.4 in 30.4 in 30.4 in 30.4 in 30.4 in 30.5 in 30.5 in 30.6 in 30.6 in
14 10 11 11 8 9 8 11 13 16 16 15
10 11 17 16 21 19 20 17 14 13 12 11
10 9 3 1 0 0 0 0 0 0 2 6
1 2 2 2 3 2 3 5 3 2 0 2
2 2 3 4 5 6 6 6 5 3 2 2
233 219 263 271 313 334 344 341 324 305 278 255
January
February
March
April
May
June
July
August
September
October
November
December
Hi 3°C Lo -4°C Hi 5°C Lo -3°C Hi 12°C Lo 4°C Hi 18°C Lo 8°C Hi 24°C Lo 14°C Hi 29°C Lo 19°C Hi 30°C Lo 20°C Hi 29°C Lo 19°C Hi 26°C Lo 15°C Hi 19°C Lo 10°C Hi 12°C Lo 4°C Hi 6°C Lo -1°C
16 km/h 15 km/h 15 km/h 15 km/h 12 km/h 11 km/h 9 km/h 9 km/h 10 km/h 13 km/h 15 km/h 14 km/h
91 mm 86 mm 136 mm 189 mm 185 mm 203 mm 176 mm 151 mm 116 mm 123 mm 99 mm 88 mm
76% 77% 76% 77% 79% 77% 79% 79% 75% 70% 72% 76%
51% 50% 46% 41% 35% 24% 25% 25% 27% 32% 36% 47%
1021 mb 1020 mb 1018 mb 1014 mb 1014 mb 1013 mb 1015 mb 1015 mb 1017 mb 1017 mb 1020 mb 1020 mb
14 10 11 11 8 9 8 11 13 16 16 15
10 11 17 16 21 19 20 17 14 13 12 11
10 9 3 1 0 0 0 0 0 0 2 6
1 2 2 2 3 2 3 5 3 2 0 2
2 2 3 4 5 6 6 6 5 3 2 2
233 219 263 271 313 334 344 341 324 305 278 255
Month
Avg. Temperatures
Avg. Wind Speed
Avg. Precipitation
Average Humidity
Avg. Cloud Cover
Barometric Pressure
Average Dry Days
Avg. Precip. Days
Average Snow Days
Average Fog Days
Average UV Index
Avg. Hours of Sun
Averages are based on historical weather data from the past 10 years.

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