Harlan, Iowa, United States Climate

Weather: -1.09°C/30.04°F, Wind SW at 3.37 km/h, 60% Humidity, 0% Chance of rain

United States
(Photo by Austin Goode on Unsplash)
Contents

Harlan Climate Summary

Located at an elevation of None meters (0 feet) above sea level, Harlan has a Humid continental, no dry season, hot summer climate (Classification: Dfa). The district’s yearly temperature is 10.17ºC (50.31ºF) and it is -2.47% lower than United States’s averages. Harlan typically receives about 22.97 millimeters (0.9 inches) of precipitation and has 35.0 rainy days (9.59% of the time) annually.

CountryUnited States
CityIowa
Longitude-95.3255541
Latitude41.653044
Attitude/ElevationNonem (0ft)
Local timeFriday 13:14
Annual high temperature13.36ºC (56.05ºF)
Annual low temperature5.44ºC (41.79ºF)
Average annual precip.22.97mm (0.9in)
Warmest monthJuly (27.32ºC / 81.18ºF)
Coldest MonthJanuary (-9.66ºC / 14.61ºF)
Wettest MonthJune (48.09mm / 1.89in)
Driest MonthFebruary (7.64mm / 0.3in)
Number of days with rainfall (≥ 1.0 mm)35.0 days (9.59%)
Days with no rain330.0 days (90.41%)
Humidity75.55%

Climate Harlan: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)9.0(48.2)12.0(53.6)20.0(68.0)26.0(78.8)35.0(95.0)34.0(93.2)33.0(91.4)32.0(89.6)37.0(98.6)30.0(86.0)21.0(69.8)14.0(57.2)37.0(98.6)
Average high °C (°F)-3.09(26.44)-3.04(26.53)6.98(44.56)13.04(55.47)20.53(68.95)26.53(79.75)27.32(81.18)26.09(78.96)24.13(75.43)13.74(56.73)6.6(43.88)1.47(34.65)13.36(56.05)
Daily mean °C (°F)-5.76(21.63)-5.75(21.65)3.77(38.79)9.46(49.03)17.41(63.34)23.37(74.07)24.14(75.45)22.71(72.88)20.29(68.52)10.0(50.0)3.58(38.44)-1.19(29.86)10.17(50.31)
Average low °C (°F)-9.66(14.61)-9.48(14.94)-0.63(30.87)3.79(38.82)12.09(53.76)18.04(64.47)18.94(66.09)17.1(62.78)14.76(58.57)5.22(41.4)-0.42(31.24)-4.49(23.92)5.44(41.79)
Record low °C (°F)-30.0(-22.0)-22.0(-7.6)-22.0(-7.6)-11.0(12.2)1.0(33.8)10.0(50.0)13.0(55.4)9.0(48.2)2.0(35.6)-9.0(15.8)-18.0(-0.4)-15.0(5.0)-30.0(-22.0)
Average precipitation mm (inches)8.7(0.34)7.64(0.3)17.2(0.68)13.85(0.55)44.59(1.76)48.09(1.89)30.68(1.21)26.0(1.02)34.78(1.37)22.41(0.88)10.57(0.42)11.12(0.44)22.97(0.9)
Average precipitation days (≥ 1.0 mm)1.822.02.272.825.094.734.183.183.642.361.821.092.92
Average relative humidity (%)80.8479.5274.0166.9175.0378.3683.5681.4774.7665.1468.6178.475.55
Mean monthly sunshine hours7.758.388.939.7811.113.7512.1610.6510.659.568.037.129.82

Climate Graph

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

Harlan

Harlan Temperature by Month

July
24.14°C | 75.45°F
June
23.37°C | 74.07°F
August
22.71°C | 72.88°F
September
20.29°C | 68.52°F
May
17.41°C | 63.34°F
October
10.0°C | 50.0°F
April
9.46°C | 49.03°F
March
3.77°C | 38.79°F
November
3.58°C | 38.44°F
December
-1.19°C | 29.86°F
February
-5.75°C | 21.65°F
January
-5.76°C | 21.63°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)25.65°C (78.17°F)17.0°C (62.6°F)
Avg Temperature28.0°C (82.4°F)22.23°C (72.01°F)15.0°C (59.0°F)
Min Temperature22.0°C (71.6°F)17.06°C (62.71°F)12.0°C (53.6°F)
Dew PointMaxAverageMin
Dew Point23.0°C (73.4°F)17.94°C (64.29°F)12.0°C (53.6°F)
PrecipitationMaxAverageMinSum
Precipitation10.8mm | 0.43in0.96mm | 0.04in0.0mm | 0in29.8mm | 1.17in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind22.0kmh | 13.67mph14.23kmh | 8.84mph3.0kmh | 1.86mph
Gust Wind35.0kmh | 21.75mph22.65kmh | 14.07mph5.0kmh | 3.11mph
Sea Level PressureMaxAverageMin
Sea Level Pressure10.8mb0.96mb0.0mb
Harlan

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
August° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2020-08-0122 | 71.616 | 60.8793 | 1.8629.94 | 10140.8 | 0.03
2020-08-0219 | 66.216 | 60.88719 | 11.8129.94 | 10141.2 | 0.05
2020-08-0317 | 62.613 | 55.48514 | 8.730.12 | 10200.0 | 0.0
2020-08-0417 | 62.613 | 55.4817 | 4.3530.09 | 10190.0 | 0.0
2020-08-0515 | 59.014 | 57.29114 | 8.730.03 | 10171.4 | 0.06
2020-08-0622 | 71.619 | 66.29117 | 10.5629.94 | 10141.9 | 0.07
2020-08-0722 | 71.620 | 68.09320 | 12.4329.94 | 10140.2 | 0.01
2020-08-0825 | 77.023 | 73.49219 | 11.8129.88 | 10120.1 | 0.0
2020-08-0926 | 78.823 | 73.48420 | 12.4329.8 | 10090.0 | 0.0
2020-08-1022 | 71.620 | 68.09013 | 8.0829.88 | 101210.8 | 0.43
2020-08-1122 | 71.617 | 62.68212 | 7.4629.94 | 10140.5 | 0.02
2020-08-1224 | 75.221 | 69.88919 | 11.8129.94 | 10140.2 | 0.01
2020-08-1324 | 75.221 | 69.89017 | 10.5629.94 | 10140.0 | 0.0
2020-08-1425 | 77.022 | 71.69015 | 9.3229.88 | 10121.0 | 0.04
2020-08-1519 | 66.215 | 59.08111 | 6.8430.03 | 10179.0 | 0.35
2020-08-1622 | 71.617 | 62.68211 | 6.8430.06 | 10180.5 | 0.02
2020-08-1723 | 73.418 | 64.4825 | 3.1130.06 | 10180.2 | 0.01
2020-08-1821 | 69.816 | 60.8828 | 4.9730.06 | 10180.0 | 0.0
2020-08-1920 | 68.016 | 60.88614 | 8.730.0 | 10160.0 | 0.0
2020-08-2020 | 68.017 | 62.68817 | 10.5629.91 | 10130.0 | 0.0
2020-08-2122 | 71.618 | 64.48615 | 9.3229.85 | 10110.0 | 0.0
2020-08-2223 | 73.420 | 68.08615 | 9.3229.83 | 10100.1 | 0.0
2020-08-2325 | 77.020 | 68.0828 | 4.9729.83 | 10100.6 | 0.02
2020-08-2426 | 78.821 | 69.88210 | 6.2129.91 | 10130.0 | 0.0
2020-08-2526 | 78.819 | 66.26716 | 9.9429.91 | 10130.0 | 0.0
2020-08-2626 | 78.819 | 66.27021 | 13.0529.83 | 10100.0 | 0.0
2020-08-2728 | 82.420 | 68.06822 | 13.6729.71 | 10060.0 | 0.0
2020-08-2826 | 78.820 | 68.07316 | 9.9429.71 | 10060.0 | 0.0
2020-08-2921 | 69.815 | 59.07312 | 7.4629.88 | 10120.0 | 0.0
2020-08-3019 | 66.212 | 53.66814 | 8.729.8 | 10090.4 | 0.02
2020-08-3120 | 68.015 | 59.07717 | 10.5629.8 | 10090.9 | 0.04

Harlan 3 Year Historical Weather Data

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