Mchenry, Illinois, United States Climate

Weather: -1.06°C/30.09°F, Wind SW at 0.89 km/h, 71% Humidity, 0% Chance of rain

United States
(Photo by Tamara Demir on Unsplash)

McHenry Climate Summary

Located at an elevation of None meters (0 feet) above sea level, McHenry has a Humid continental, no dry season, hot summer climate (Classification: Dfa). The district’s yearly temperature is 9.79ºC (49.62ºF) and it is -2.85% lower than United States’s averages. McHenry typically receives about 39.77 millimeters (1.57 inches) of precipitation and has 45.45 rainy days (12.45% of the time) annually.

CountryUnited States
CityIllinois
Longitude-88.2667534
Latitude42.333355
Attitude/ElevationNonem (0ft)
Local timeFriday 08:34
Annual high temperature12.54ºC (54.57ºF)
Annual low temperature5.06ºC (41.11ºF)
Average annual precip.39.77mm (1.57in)
Warmest monthJuly (26.98ºC / 80.56ºF)
Coldest MonthJanuary (-8.41ºC / 16.86ºF)
Wettest MonthMay (66.89mm / 2.63in)
Driest MonthDecember (20.66mm / 0.81in)
Number of days with rainfall (≥ 1.0 mm)45.45 days (12.45%)
Days with no rain319.55 days (87.55%)
Humidity77.94%

Climate McHenry: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)11.0(51.8)15.0(59.0)17.0(62.6)25.0(77.0)35.0(95.0)33.0(91.4)32.0(89.6)31.0(87.8)30.0(86.0)28.0(82.4)21.0(69.8)13.0(55.4)35.0(95.0)
Average high °C (°F)-2.67(27.19)-1.39(29.5)5.82(42.48)10.54(50.97)19.42(66.96)24.17(75.51)26.98(80.56)25.57(78.03)21.94(71.49)13.05(55.49)5.0(41.0)2.1(35.78)12.54(54.57)
Daily mean °C (°F)-4.72(23.5)-3.81(25.14)2.96(37.33)7.41(45.34)16.31(61.36)21.29(70.32)24.16(75.49)22.45(72.41)18.71(65.68)10.04(50.07)2.63(36.73)0.01(32.02)9.79(49.62)
Average low °C (°F)-8.41(16.86)-7.94(17.71)-1.41(29.46)2.2(35.96)10.41(50.74)15.13(59.23)18.57(65.43)17.15(62.87)13.8(56.84)5.42(41.76)-1.11(30.0)-3.09(26.44)5.06(41.11)
Record low °C (°F)-34.0(-29.2)-25.0(-13.0)-21.0(-5.8)-8.0(17.6)-3.0(26.6)7.0(44.6)14.0(57.2)11.0(51.8)4.0(39.2)-5.0(23.0)-15.0(5.0)-13.0(8.6)-34.0(-29.2)
Average precipitation mm (inches)26.89(1.06)32.71(1.29)23.97(0.94)47.22(1.86)66.89(2.63)49.73(1.96)47.49(1.87)47.47(1.87)50.14(1.97)39.18(1.54)24.95(0.98)20.66(0.81)39.77(1.57)
Average precipitation days (≥ 1.0 mm)2.643.822.914.455.094.825.364.453.733.362.732.093.79
Average relative humidity (%)81.8582.5270.4372.4476.5278.7881.0981.7581.1974.5377.7376.4777.94
Mean monthly sunshine hours6.027.489.39.6912.2313.1313.7112.0610.198.366.476.489.59

Climate Graph

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

McHenry

McHenry Temperature by Month

July
24.16°C | 75.49°F
August
22.45°C | 72.41°F
June
21.29°C | 70.32°F
September
18.71°C | 65.68°F
May
16.31°C | 61.36°F
October
10.04°C | 50.07°F
April
7.41°C | 45.34°F
March
2.96°C | 37.33°F
November
2.63°C | 36.73°F
December
0.01°C | 32.02°F
February
-3.81°C | 25.14°F
January
-4.72°C | 23.5°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature28.0°C (82.4°F)24.81°C (76.66°F)21.0°C (69.8°F)
Avg Temperature25.0°C (77.0°F)21.84°C (71.31°F)17.0°C (62.6°F)
Min Temperature20.0°C (68.0°F)16.42°C (61.56°F)12.0°C (53.6°F)
Dew PointMaxAverageMin
Dew Point21.0°C (69.8°F)16.61°C (61.9°F)11.0°C (51.8°F)
PrecipitationMaxAverageMinSum
Precipitation35.8mm | 1.41in4.21mm | 0.17in0.0mm | 0in130.5mm | 5.14in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind20.0kmh | 12.43mph10.74kmh | 6.67mph4.0kmh | 2.49mph
Gust Wind32.0kmh | 19.88mph17.65kmh | 10.97mph8.0kmh | 4.97mph
Sea Level PressureMaxAverageMin
Sea Level Pressure35.8mb4.21mb0.0mb
McHenry

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
August° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2019-08-0121 | 69.813 | 55.4678 | 4.9730.15 | 10210.0 | 0.0
2019-08-0224 | 75.214 | 57.2654 | 2.4930.12 | 10200.0 | 0.0
2019-08-0324 | 75.217 | 62.6746 | 3.7330.06 | 10183.1 | 0.12
2019-08-0425 | 77.019 | 66.2816 | 3.7330.0 | 10167.4 | 0.29
2019-08-0525 | 77.020 | 68.08512 | 7.4629.91 | 101311.1 | 0.44
2019-08-0623 | 73.419 | 66.28312 | 7.4629.8 | 10095.8 | 0.23
2019-08-0724 | 75.219 | 66.28111 | 6.8429.83 | 10102.1 | 0.08
2019-08-0822 | 71.617 | 62.68216 | 9.9429.83 | 10102.3 | 0.09
2019-08-0921 | 69.815 | 59.07710 | 6.2129.94 | 10140.0 | 0.0
2019-08-1023 | 73.416 | 60.8766 | 3.7329.97 | 10150.0 | 0.0
2019-08-1123 | 73.419 | 66.28511 | 6.8429.94 | 10140.7 | 0.03
2019-08-1224 | 75.220 | 68.0896 | 3.7329.85 | 10115.3 | 0.21
2019-08-1323 | 73.420 | 68.08912 | 7.4629.83 | 10104.8 | 0.19
2019-08-1421 | 69.817 | 62.6868 | 4.9729.94 | 10149.9 | 0.39
2019-08-1521 | 69.815 | 59.08010 | 6.2129.97 | 10150.4 | 0.02
2019-08-1622 | 71.617 | 62.68414 | 8.729.88 | 10126.3 | 0.25
2019-08-1723 | 73.419 | 66.2866 | 3.7329.85 | 10119.4 | 0.37
2019-08-1823 | 73.420 | 68.08815 | 9.3229.83 | 101010.4 | 0.41
2019-08-1924 | 75.219 | 66.2857 | 4.3529.97 | 10155.5 | 0.22
2019-08-2024 | 75.221 | 69.8887 | 4.3529.94 | 10143.3 | 0.13
2019-08-2123 | 73.419 | 66.28511 | 6.8429.94 | 10144.5 | 0.18
2019-08-2220 | 68.014 | 57.27412 | 7.4630.0 | 10160.1 | 0.0
2019-08-2319 | 66.213 | 55.47512 | 7.4630.18 | 10220.2 | 0.01
2019-08-2419 | 66.213 | 55.47612 | 7.4630.24 | 10240.0 | 0.0
2019-08-2520 | 68.014 | 57.27512 | 7.4630.09 | 10190.0 | 0.0
2019-08-2621 | 69.819 | 66.29111 | 6.8429.77 | 100835.8 | 1.41
2019-08-2721 | 69.816 | 60.88417 | 10.5629.8 | 10090.3 | 0.01
2019-08-2818 | 64.412 | 53.67820 | 12.4329.91 | 10130.2 | 0.01
2019-08-2921 | 69.816 | 60.88319 | 11.8129.88 | 10121.4 | 0.06
2019-08-3017 | 62.611 | 51.87310 | 6.2130.12 | 10200.2 | 0.01
2019-08-3118 | 64.412 | 53.67210 | 6.2130.24 | 10240.0 | 0.0

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