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Hartland, WI weather and climate

Waukesha County, WI · population 9,716 · about 948 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Hartland's own coordinates.

The year at a glance

Sunny days
183
clear or partly cloudy, per year
Precipitation
34 in
per year
Wet days
125
rain or snow per year
Snowfall
42 in
per year
Hot days
8
above 90 °F
Freezing nights
146
at or below 32 °F
Humidity
71%
average relative
Average temperature
47 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
255075JanMarMayJulSepNovDaily high, Jan: 28 °FDaily high, Feb: 32 °FDaily high, Mar: 43 °FDaily high, Apr: 55 °FDaily high, May: 67 °FDaily high, Jun: 78 °FDaily high, Jul: 82 °FDaily high, Aug: 80 °FDaily high, Sep: 73 °FDaily high, Oct: 60 °FDaily high, Nov: 45 °FDaily high, Dec: 33 °FDaily low, Jan: 12 °FDaily low, Feb: 15 °FDaily low, Mar: 24 °FDaily low, Apr: 35 °FDaily low, May: 47 °FDaily low, Jun: 56 °FDaily low, Jul: 61 °FDaily low, Aug: 60 °FDaily low, Sep: 51 °FDaily low, Oct: 40 °FDaily low, Nov: 28 °FDaily low, Dec: 18 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high283243556778828073604533
Daily low121524354756616051402818

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovHartland, Jan: 1.8 inHartland, Feb: 1.8 inHartland, Mar: 2.3 inHartland, Apr: 4.0 inHartland, May: 3.8 inHartland, Jun: 3.8 inHartland, Jul: 3.4 inHartland, Aug: 3.5 inHartland, Sep: 3.0 inHartland, Oct: 2.9 inHartland, Nov: 2.2 inHartland, Dec: 2.0 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Hartland1.81.82.34.03.83.83.43.53.02.92.22.0

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovHartland, Jan: 12 daysHartland, Feb: 12 daysHartland, Mar: 14 daysHartland, Apr: 13 daysHartland, May: 15 daysHartland, Jun: 16 daysHartland, Jul: 20 daysHartland, Aug: 20 daysHartland, Sep: 19 daysHartland, Oct: 16 daysHartland, Nov: 14 daysHartland, Dec: 12 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Hartland121214131516202019161412

Compare Hartland with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Wisconsin city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).