Dekalb, Illinois, United States Climate

Weather: -0.93°C/30.33°F, Wind SW at 0.45 km/h, 78% Humidity, 0% Chance of rain

United States
(Photo by Gabriel Meinert on Unsplash)
Contents

DeKalb Climate Summary

Located at an elevation of None meters (0 feet) above sea level, DeKalb has a Humid continental, no dry season, hot summer climate (Classification: Dfa). The district’s yearly temperature is 10.01ºC (50.02ºF) and it is -2.63% lower than United States’s averages. DeKalb typically receives about 44.05 millimeters (1.73 inches) of precipitation and has 45.36 rainy days (12.43% of the time) annually.

CountryUnited States
CityIllinois
Longitude-88.7503647
Latitude41.9294736
Attitude/ElevationNonem (0ft)
Local timeThursday 11:01
Annual high temperature12.81ºC (55.06ºF)
Annual low temperature5.32ºC (41.58ºF)
Average annual precip.44.05mm (1.73in)
Warmest monthJuly (26.51ºC / 79.72ºF)
Coldest MonthJanuary (-8.67ºC / 16.39ºF)
Wettest MonthMay (72.65mm / 2.86in)
Driest MonthDecember (21.83mm / 0.86in)
Number of days with rainfall (≥ 1.0 mm)45.36 days (12.43%)
Days with no rain319.64 days (87.57%)
Humidity78.74%

Climate DeKalb: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)11.0(51.8)15.0(59.0)17.0(62.6)25.0(77.0)34.0(93.2)32.0(89.6)31.0(87.8)30.0(86.0)30.0(86.0)28.0(82.4)22.0(71.6)14.0(57.2)34.0(93.2)
Average high °C (°F)-2.59(27.34)-1.45(29.39)6.38(43.48)11.19(52.14)20.4(68.72)24.81(76.66)26.51(79.72)25.14(77.25)22.12(71.82)13.54(56.37)5.27(41.49)2.43(36.37)12.81(55.06)
Daily mean °C (°F)-4.75(23.45)-3.8(25.16)3.48(38.26)7.99(46.38)17.19(62.94)21.8(71.24)23.92(75.06)22.15(71.87)18.88(65.98)10.38(50.68)2.72(36.9)0.15(32.27)10.01(50.02)
Average low °C (°F)-8.67(16.39)-8.05(17.51)-0.92(30.34)2.84(37.11)11.37(52.47)15.88(60.58)18.57(65.43)16.94(62.49)13.93(57.07)5.78(42.4)-0.89(30.4)-2.95(26.69)5.32(41.58)
Record low °C (°F)-33.0(-27.4)-24.0(-11.2)-21.0(-5.8)-8.0(17.6)-4.0(24.8)8.0(46.4)13.0(55.4)11.0(51.8)4.0(39.2)-6.0(21.2)-16.0(3.2)-14.0(6.8)-33.0(-27.4)
Average precipitation mm (inches)31.43(1.24)35.24(1.39)29.64(1.17)54.04(2.13)72.65(2.86)55.47(2.18)56.08(2.21)49.76(1.96)58.65(2.31)36.11(1.42)27.75(1.09)21.83(0.86)44.05(1.73)
Average precipitation days (≥ 1.0 mm)2.733.733.094.455.275.094.824.363.823.552.362.093.78
Average relative humidity (%)82.5583.2769.8771.8275.8879.9985.2485.882.973.5677.2476.7378.74
Mean monthly sunshine hours6.187.519.199.7112.2113.0113.4511.5810.018.656.556.539.55

Climate Graph

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

DeKalb

DeKalb Temperature by Month

July
23.92°C | 75.06°F
August
22.15°C | 71.87°F
June
21.8°C | 71.24°F
September
18.88°C | 65.98°F
May
17.19°C | 62.94°F
October
10.38°C | 50.68°F
April
7.99°C | 46.38°F
March
3.48°C | 38.26°F
November
2.72°C | 36.9°F
December
0.15°C | 32.27°F
February
-3.8°C | 25.16°F
January
-4.75°C | 23.45°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature14.0°C (57.2°F)3.1°C (37.58°F)-8.0°C (17.6°F)
Avg Temperature12.0°C (53.6°F)0.71°C (33.28°F)-10.0°C (14.0°F)
Min Temperature9.0°C (48.2°F)-2.65°C (27.23°F)-12.0°C (10.4°F)
Dew PointMaxAverageMin
Dew Point10.0°C (50.0°F)-3.13°C (26.37°F)-16.0°C (3.2°F)
PrecipitationMaxAverageMinSum
Precipitation28.8mm | 1.13in1.51mm | 0.06in0.0mm | 0in46.7mm | 1.84in
Snowdepth4.8mm | 0.19in0.2mm | 0.01in0.0mm | 0in6.1mm | 0.24in
WindMaxAverageMin
Wind27.0kmh | 16.78mph17.03kmh | 10.58mph8.0kmh | 4.97mph
Gust Wind37.0kmh | 22.99mph25.74kmh | 15.99mph11.0kmh | 6.84mph
Sea Level PressureMaxAverageMin
Sea Level Pressure28.8mb1.51mb0.0mb
DeKalb

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
December° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2019-12-011 | 33.81 | 33.89418 | 11.1829.47 | 9988.2 | 0.32
2019-12-02-1 | 30.2-5 | 23.07919 | 11.8130.0 | 10160.0 | 0.0
2019-12-031 | 33.8-3 | 26.67716 | 9.9429.8 | 10090.0 | 0.0
2019-12-041 | 33.8-3 | 26.68123 | 14.2929.77 | 10080.0 | 0.0
2019-12-052 | 35.6-2 | 28.4858 | 4.9730.0 | 10160.0 | 0.0
2019-12-060 | 32.0-3 | 26.67814 | 8.730.27 | 10250.0 | 0.0
2019-12-071 | 33.8-5 | 23.06913 | 8.0830.3 | 10260.0 | 0.0
2019-12-084 | 39.21 | 33.88422 | 13.6729.91 | 10130.1 | 0.0
2019-12-095 | 41.02 | 35.68718 | 11.1829.62 | 10030.8 | 0.03
2019-12-10-8 | 17.6-16 | 3.25321 | 13.0530.18 | 10220.0 | 0.0
2019-12-11-7 | 19.4-15 | 5.05713 | 8.0830.45 | 10310.1 | 0.0
2019-12-122 | 35.6-6 | 21.26923 | 14.2930.24 | 10240.0 | 0.0
2019-12-132 | 35.6-1 | 30.28313 | 8.0829.94 | 10140.0 | 0.0
2019-12-14-2 | 28.4-5 | 23.07715 | 9.3229.83 | 10100.0 | 0.0
2019-12-15-6 | 21.2-12 | 10.46312 | 7.4630.09 | 10190.2 | 0.01
2019-12-16-3 | 26.6-7 | 19.48311 | 6.8430.18 | 10221.1 | 0.04
2019-12-17-5 | 23.0-7 | 19.48321 | 13.0530.15 | 10210.0 | 0.0
2019-12-18-10 | 14.0-15 | 5.06014 | 8.730.33 | 10270.0 | 0.0
2019-12-19-3 | 26.6-8 | 17.67416 | 9.9430.3 | 10260.0 | 0.0
2019-12-200 | 32.0-2 | 28.48914 | 8.730.39 | 10290.0 | 0.0
2019-12-212 | 35.6-1 | 30.28416 | 9.9430.33 | 10270.0 | 0.0
2019-12-225 | 41.00 | 32.08019 | 11.8130.21 | 10230.0 | 0.0
2019-12-235 | 41.01 | 33.88015 | 9.3230.09 | 10190.0 | 0.0
2019-12-246 | 42.82 | 35.68415 | 9.3230.0 | 10160.0 | 0.0
2019-12-258 | 46.45 | 41.08517 | 10.5629.88 | 10120.0 | 0.0
2019-12-2611 | 51.88 | 46.48520 | 12.4329.94 | 10140.0 | 0.0
2019-12-271 | 33.8-2 | 28.48011 | 6.8430.24 | 10240.0 | 0.0
2019-12-283 | 37.4-0 | 32.08018 | 11.1830.09 | 10191.9 | 0.07
2019-12-2912 | 53.610 | 50.08623 | 14.2929.56 | 100128.8 | 1.13
2019-12-30-1 | 30.2-3 | 26.68023 | 14.2929.5 | 9991.8 | 0.07
2019-12-31-4 | 24.8-6 | 21.28327 | 16.7829.74 | 10073.7 | 0.15

DeKalb 3 Year Historical Weather Data

Nearby locations

Comments (0)

  • Latest first
  • Highest rated
Be the first to comment on this page