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Westfield, NJ weather and climate

Union County, NJ · population 30,760 · about 125 ft elevation

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

The year at a glance

Sunny days
200
clear or partly cloudy, per year
Precipitation
45 in
per year
Wet days
123
rain or snow per year
Snowfall
26 in
per year
Hot days
27
above 90 °F
Freezing nights
99
at or below 32 °F
Humidity
70%
average relative
Average temperature
55 °F
year round

Monthly temperatures

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

Daily highDaily low
20406080JanMarMayJulSepNovDaily high, Jan: 40 °FDaily high, Feb: 43 °FDaily high, Mar: 51 °FDaily high, Apr: 63 °FDaily high, May: 72 °FDaily high, Jun: 81 °FDaily high, Jul: 86 °FDaily high, Aug: 85 °FDaily high, Sep: 77 °FDaily high, Oct: 66 °FDaily high, Nov: 55 °FDaily high, Dec: 45 °FDaily low, Jan: 25 °FDaily low, Feb: 26 °FDaily low, Mar: 33 °FDaily low, Apr: 42 °FDaily low, May: 52 °FDaily low, Jun: 62 °FDaily low, Jul: 67 °FDaily low, Aug: 66 °FDaily low, Sep: 59 °FDaily low, Oct: 46 °FDaily low, Nov: 37 °FDaily low, Dec: 30 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high404351637281868577665545
Daily low252633425262676659463730

Monthly precipitation

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

0.02.04.0JanMarMayJulSepNovWestfield, Jan: 3.4 inWestfield, Feb: 3.1 inWestfield, Mar: 4.2 inWestfield, Apr: 3.7 inWestfield, May: 3.6 inWestfield, Jun: 4.1 inWestfield, Jul: 4.2 inWestfield, Aug: 4.0 inWestfield, Sep: 4.0 inWestfield, Oct: 3.9 inWestfield, Nov: 3.1 inWestfield, Dec: 4.1 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Westfield3.43.14.23.73.64.14.24.04.03.93.14.1

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovWestfield, Jan: 17 daysWestfield, Feb: 16 daysWestfield, Mar: 17 daysWestfield, Apr: 15 daysWestfield, May: 15 daysWestfield, Jun: 15 daysWestfield, Jul: 18 daysWestfield, Aug: 18 daysWestfield, Sep: 18 daysWestfield, Oct: 19 daysWestfield, Nov: 17 daysWestfield, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Westfield171617151515181818191716

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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).