Harpenden, Hertfordshire, United Kingdom Climate

Weather: 17.64°C/63.75°F, Wind SW at 3.6 km/h, 73% Humidity, 0% Chance of rain

United Kingdom
(Photo by Monica M. on Unsplash)
Contents

Harpenden Climate Summary

Located at an elevation of None meters (0 feet) above sea level, Harpenden has a Marine west coast, warm summer climate (Classification: Cfb). The district’s yearly temperature is 11.64ºC (52.95ºF) and it is 0.89% higher than United Kingdom’s averages. Harpenden typically receives about 18.57 millimeters (0.73 inches) of precipitation and has 41.44 rainy days (11.35% of the time) annually.

CountryUnited Kingdom
CityHertfordshire
Longitude-0.358953
Latitude51.81846
Attitude/ElevationNonem (0ft)
Local timeThursday 09:33
Annual high temperature13.88ºC (56.98ºF)
Annual low temperature7.81ºC (46.06ºF)
Average annual precip.18.57mm (0.73in)
Warmest monthAugust (21.86ºC / 71.35ºF)
Coldest MonthJanuary (2.67ºC / 36.81ºF)
Wettest MonthDecember (25.03mm / 0.99in)
Driest MonthApril (13.62mm / 0.54in)
Number of days with rainfall (≥ 1.0 mm)41.44 days (11.35%)
Days with no rain323.56 days (88.65%)
Humidity80.04%

Climate Harpenden: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)13.0(55.4)18.0(64.4)16.0(60.8)28.0(82.4)27.0(80.6)29.0(84.2)34.0(93.2)32.0(89.6)27.0(80.6)22.0(71.6)16.0(60.8)14.0(57.2)34.0(93.2)
Average high °C (°F)6.94(44.49)7.87(46.17)9.04(48.27)13.73(56.71)16.59(61.86)19.03(66.25)21.76(71.17)21.86(71.35)18.5(65.3)13.53(56.35)10.0(50.0)7.65(45.77)13.88(56.98)
Daily mean °C (°F)5.31(41.56)5.71(42.28)6.96(44.53)10.96(51.73)13.9(57.02)16.52(61.74)19.15(66.47)19.19(66.54)15.87(60.57)11.46(52.63)8.32(46.98)6.32(43.38)11.64(52.95)
Average low °C (°F)2.67(36.81)2.81(37.06)3.46(38.23)6.2(43.16)8.42(47.16)11.42(52.56)14.14(57.45)14.83(58.69)11.69(53.04)8.37(47.07)5.86(42.55)3.85(38.93)7.81(46.06)
Record low °C (°F)-5.0(23.0)-6.0(21.2)-6.0(21.2)-2.0(28.4)1.0(33.8)5.0(41.0)7.0(44.6)9.0(48.2)6.0(42.8)2.0(35.6)-3.0(26.6)-6.0(21.2)-6.0(21.2)
Average precipitation mm (inches)17.97(0.71)16.85(0.66)19.96(0.79)13.62(0.54)16.05(0.63)24.86(0.98)16.0(0.63)19.68(0.77)13.85(0.55)20.56(0.81)18.42(0.73)25.03(0.99)18.57(0.73)
Average precipitation days (≥ 1.0 mm)3.273.364.453.273.363.823.183.731.913.913.363.823.45
Average relative humidity (%)85.3980.7580.8879.7177.9880.674.3772.8173.0481.8285.6687.4980.04
Mean monthly sunshine hours4.657.618.1910.7213.6215.1414.7811.879.857.595.84.689.54

Climate Graph

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

Harpenden

Harpenden Temperature by Month

August
19.19°C | 66.54°F
July
19.15°C | 66.47°F
June
16.52°C | 61.74°F
September
15.87°C | 60.57°F
May
13.9°C | 57.02°F
October
11.46°C | 52.63°F
April
10.96°C | 51.73°F
November
8.32°C | 46.98°F
March
6.96°C | 44.53°F
December
6.32°C | 43.38°F
February
5.71°C | 42.28°F
January
5.31°C | 41.56°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature23.0°C (73.4°F)18.7°C (65.66°F)11.0°C (51.8°F)
Avg Temperature20.0°C (68.0°F)16.0°C (60.8°F)10.0°C (50.0°F)
Min Temperature17.0°C (62.6°F)11.73°C (53.11°F)7.0°C (44.6°F)
Dew PointMaxAverageMin
Dew Point15.0°C (59.0°F)9.2°C (48.56°F)4.0°C (39.2°F)
PrecipitationMaxAverageMinSum
Precipitation14.0mm | 0.55in1.23mm | 0.05in0.0mm | 0in36.8mm | 1.45in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind31.0kmh | 19.26mph14.67kmh | 9.12mph6.0kmh | 3.73mph
Gust Wind43.0kmh | 26.72mph21.07kmh | 13.09mph8.0kmh | 4.97mph
Sea Level PressureMaxAverageMin
Sea Level Pressure14.0mb1.23mb0.0mb
Harpenden

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
September° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2018-09-0120 | 68.010 | 50.06311 | 6.8430.27 | 10250.1 | 0.0
2018-09-0220 | 68.08 | 46.4549 | 5.5930.24 | 10240.0 | 0.0
2018-09-0320 | 68.09 | 48.2576 | 3.7330.15 | 10210.0 | 0.0
2018-09-0417 | 62.611 | 51.86912 | 7.4630.15 | 10210.0 | 0.0
2018-09-0517 | 62.611 | 51.87213 | 8.0830.15 | 10210.0 | 0.0
2018-09-0616 | 60.810 | 50.07112 | 7.4630.0 | 10160.3 | 0.01
2018-09-0714 | 57.26 | 42.86715 | 9.3230.0 | 10160.0 | 0.0
2018-09-0815 | 59.010 | 50.07615 | 9.3230.06 | 10180.5 | 0.02
2018-09-0918 | 64.412 | 53.67417 | 10.5630.06 | 10180.0 | 0.0
2018-09-1017 | 62.610 | 50.07216 | 9.9430.15 | 10210.0 | 0.0
2018-09-1118 | 64.415 | 59.08320 | 12.4330.09 | 10190.9 | 0.04
2018-09-1215 | 59.09 | 48.2708 | 4.9730.18 | 10221.2 | 0.05
2018-09-1316 | 60.88 | 46.4649 | 5.5930.21 | 10230.0 | 0.0
2018-09-1415 | 59.08 | 46.46915 | 9.3230.12 | 10200.1 | 0.0
2018-09-1516 | 60.810 | 50.07412 | 7.4630.21 | 10230.1 | 0.0
2018-09-1619 | 66.212 | 53.67119 | 11.8130.06 | 10180.0 | 0.0
2018-09-1720 | 68.013 | 55.47018 | 11.1829.94 | 10140.4 | 0.02
2018-09-1819 | 66.213 | 55.47027 | 16.7829.77 | 10080.0 | 0.0
2018-09-1919 | 66.213 | 55.47327 | 16.7829.85 | 10110.6 | 0.02
2018-09-2018 | 64.414 | 57.27926 | 16.1629.8 | 10093.1 | 0.12
2018-09-2113 | 55.46 | 42.86431 | 19.2629.71 | 10062.3 | 0.09
2018-09-2211 | 51.88 | 46.48412 | 7.4630.03 | 101713.2 | 0.52
2018-09-2310 | 50.06 | 42.87715 | 9.3230.09 | 101914.0 | 0.55
2018-09-2412 | 53.64 | 39.26610 | 6.2130.59 | 10360.0 | 0.0
2018-09-2513 | 55.45 | 41.0648 | 4.9730.62 | 10370.0 | 0.0
2018-09-2616 | 60.88 | 46.46812 | 7.4630.47 | 10320.0 | 0.0
2018-09-2718 | 64.49 | 48.26411 | 6.8430.3 | 10260.0 | 0.0
2018-09-2813 | 55.46 | 42.86715 | 9.3230.42 | 10300.0 | 0.0
2018-09-2914 | 57.26 | 42.8656 | 3.7330.36 | 10280.0 | 0.0
2018-09-3011 | 51.86 | 42.87213 | 8.0830.12 | 10200.0 | 0.0

Harpenden 3 Year Historical Weather Data

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