St. Charles, Missouri, United States Climate

Weather: 8.36°C/47.05°F, Wind SW at 0.89 km/h, 54% Humidity, 0% Chance of rain

United States
(Photo by Danny Lines on Unsplash)

St. Charles Climate Summary

Located at an elevation of None meters (0 feet) above sea level, St. Charles has a Humid subtropical, no dry season climate (Classification: Cfa). The district’s yearly temperature is 14.47ºC (58.05ºF) and it is 1.83% higher than United States’s averages. St. Charles typically receives about 33.84 millimeters (1.33 inches) of precipitation and has 42.38 rainy days (11.61% of the time) annually.

CountryUnited States
CityMissouri
Longitude-90.4974359
Latitude38.7881062
Attitude/ElevationNonem (0ft)
Local timeFriday 09:48
Annual high temperature17.84ºC (64.11ºF)
Annual low temperature9.42ºC (48.96ºF)
Average annual precip.33.84mm (1.33in)
Warmest monthJuly (30.61ºC / 87.1ºF)
Coldest MonthJanuary (-3.35ºC / 25.97ºF)
Wettest MonthAugust (54.67mm / 2.15in)
Driest MonthNovember (19.02mm / 0.75in)
Number of days with rainfall (≥ 1.0 mm)42.38 days (11.61%)
Days with no rain322.62 days (88.39%)
Humidity72.41%

Climate St. Charles: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)19.0(66.2)25.0(77.0)24.0(75.2)29.0(84.2)34.0(93.2)35.0(95.0)36.0(96.8)36.0(96.8)34.0(93.2)32.0(89.6)23.0(73.4)19.0(66.2)36.0(96.8)
Average high °C (°F)3.39(38.1)5.79(42.42)11.03(51.85)16.49(61.68)24.6(76.28)29.32(84.78)30.61(87.1)29.4(84.92)27.67(81.81)18.03(64.45)10.39(50.7)7.34(45.21)17.84(64.11)
Daily mean °C (°F)0.67(33.21)2.54(36.57)7.86(46.15)12.64(54.75)21.29(70.32)25.78(78.4)27.29(81.12)25.75(78.35)23.62(74.52)14.62(58.32)7.12(44.82)4.4(39.92)14.47(58.05)
Average low °C (°F)-3.35(25.97)-1.85(28.67)3.19(37.74)6.83(44.29)15.61(60.1)19.8(67.64)21.72(71.1)20.26(68.47)18.02(64.44)9.55(49.19)2.8(37.04)0.47(32.85)9.42(48.96)
Record low °C (°F)-21.0(-5.8)-14.0(6.8)-15.0(5.0)-6.0(21.2)3.0(37.4)11.0(51.8)17.0(62.6)14.0(57.2)7.0(44.6)-2.0(28.4)-13.0(8.6)-10.0(14.0)-21.0(-5.8)
Average precipitation mm (inches)29.17(1.15)30.73(1.21)31.0(1.22)32.31(1.27)41.67(1.64)47.3(1.86)43.59(1.72)54.67(2.15)27.54(1.08)27.57(1.09)19.02(0.75)21.5(0.85)33.84(1.33)
Average precipitation days (≥ 1.0 mm)2.093.093.363.644.824.914.554.643.912.912.551.913.53
Average relative humidity (%)73.5671.6970.5768.8974.8873.4875.9275.8372.667.7471.0272.7772.41
Mean monthly sunshine hours6.968.088.999.4612.4813.7113.410.9210.739.457.036.789.83

Climate Graph

The chart below shows the mean monthly temperature and precipitation of St. Charles in recent years.

St. Charles

St. Charles Temperature by Month

July
27.29°C | 81.12°F
June
25.78°C | 78.4°F
August
25.75°C | 78.35°F
September
23.62°C | 74.52°F
May
21.29°C | 70.32°F
October
14.62°C | 58.32°F
April
12.64°C | 54.75°F
March
7.86°C | 46.15°F
November
7.12°C | 44.82°F
December
4.4°C | 39.92°F
February
2.54°C | 36.57°F
January
0.67°C | 33.21°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature32.0°C (89.6°F)17.42°C (63.36°F)2.0°C (35.6°F)
Avg Temperature28.0°C (82.4°F)14.0°C (57.2°F)0.0°C (0°F)
Min Temperature23.0°C (73.4°F)9.16°C (48.49°F)-2.0°C (28.4°F)
Dew PointMaxAverageMin
Dew Point20.0°C (68.0°F)7.19°C (44.94°F)-3.0°C (26.6°F)
PrecipitationMaxAverageMinSum
Precipitation33.9mm | 1.33in2.75mm | 0.11in0.0mm | 0in85.2mm | 3.35in
Snowdepth0.3mm | 0.01in0.01mm | 0.0in0.0mm | 0in0.3mm | 0.01in
WindMaxAverageMin
Wind24.0kmh | 14.91mph14.0kmh | 8.7mph6.0kmh | 3.73mph
Gust Wind34.0kmh | 21.13mph21.06kmh | 13.09mph9.0kmh | 5.59mph
Sea Level PressureMaxAverageMin
Sea Level Pressure33.9mb2.75mb0.0mb
St. Charles

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
October° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2019-10-0128 | 82.420 | 68.06814 | 8.729.97 | 10150.0 | 0.0
2019-10-0228 | 82.420 | 68.06914 | 8.729.91 | 10130.0 | 0.0
2019-10-0318 | 64.414 | 57.27419 | 11.8130.09 | 10190.3 | 0.01
2019-10-0415 | 59.08 | 46.46713 | 8.0830.27 | 10250.0 | 0.0
2019-10-0519 | 66.212 | 53.67311 | 6.8430.03 | 10172.5 | 0.1
2019-10-0617 | 62.610 | 50.06812 | 7.4630.12 | 10203.8 | 0.15
2019-10-0718 | 64.47 | 44.6548 | 4.9730.21 | 10230.3 | 0.01
2019-10-0818 | 64.47 | 44.6526 | 3.7330.15 | 10210.0 | 0.0
2019-10-0918 | 64.48 | 46.45710 | 6.2130.03 | 10170.0 | 0.0
2019-10-1020 | 68.015 | 59.07815 | 9.3229.91 | 10135.5 | 0.22
2019-10-118 | 46.46 | 42.87623 | 14.2930.03 | 101718.0 | 0.71
2019-10-129 | 48.2-1 | 30.25618 | 11.1830.09 | 10190.0 | 0.0
2019-10-1313 | 55.44 | 39.26116 | 9.9429.94 | 10140.0 | 0.0
2019-10-1416 | 60.86 | 42.8606 | 3.7330.03 | 10170.0 | 0.0
2019-10-1516 | 60.810 | 50.07214 | 8.729.91 | 10130.8 | 0.03
2019-10-1610 | 50.03 | 37.46517 | 10.5630.06 | 10180.1 | 0.0
2019-10-1713 | 55.44 | 39.2657 | 4.3530.06 | 10180.0 | 0.0
2019-10-1814 | 57.25 | 41.06215 | 9.3229.94 | 10140.0 | 0.0
2019-10-1915 | 59.08 | 46.46910 | 6.2129.8 | 10090.3 | 0.01
2019-10-2015 | 59.011 | 51.88112 | 7.4629.85 | 10110.2 | 0.01
2019-10-2116 | 60.810 | 50.07020 | 12.4329.59 | 10021.3 | 0.05
2019-10-2211 | 51.82 | 35.65823 | 14.2929.88 | 10120.0 | 0.0
2019-10-2316 | 60.84 | 39.25315 | 9.3229.97 | 10150.0 | 0.0
2019-10-249 | 48.24 | 39.27118 | 11.1830.27 | 10250.6 | 0.02
2019-10-2510 | 50.03 | 37.46711 | 6.8430.27 | 10250.1 | 0.0
2019-10-269 | 48.26 | 42.88112 | 7.4629.8 | 100933.9 | 1.33
2019-10-2714 | 57.28 | 46.47810 | 6.2129.94 | 10143.6 | 0.14
2019-10-2811 | 51.88 | 46.4828 | 4.9730.03 | 10170.0 | 0.0
2019-10-296 | 42.82 | 35.67816 | 9.9430.21 | 10234.3 | 0.17
2019-10-304 | 39.22 | 35.69117 | 10.5630.12 | 10209.2 | 0.36
2019-10-310 | 32.0-3 | 26.68024 | 14.9130.12 | 10200.4 | 0.02

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