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Monmouth Junction, NJ weather and climate

Middlesex County, NJ · population 9,457 · about 118 ft elevation

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

The year at a glance

Sunny days
200
clear or partly cloudy, per year
Precipitation
45 in
per year
Wet days
121
rain or snow per year
Snowfall
26 in
per year
Hot days
24
above 90 °F
Freezing nights
113
at or below 32 °F
Humidity
69%
average relative
Average temperature
53 °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: 78 °FDaily high, Oct: 66 °FDaily high, Nov: 55 °FDaily high, Dec: 45 °FDaily low, Jan: 22 °FDaily low, Feb: 23 °FDaily low, Mar: 30 °FDaily low, Apr: 40 °FDaily low, May: 49 °FDaily low, Jun: 59 °FDaily low, Jul: 64 °FDaily low, Aug: 62 °FDaily low, Sep: 55 °FDaily low, Oct: 43 °FDaily low, Nov: 34 °FDaily low, Dec: 27 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high404351637281868578665545
Daily low222330404959646255433427

Monthly precipitation

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

0.02.04.0JanMarMayJulSepNovMonmouth Junction, Jan: 3.3 inMonmouth Junction, Feb: 3.1 inMonmouth Junction, Mar: 4.2 inMonmouth Junction, Apr: 3.7 inMonmouth Junction, May: 3.5 inMonmouth Junction, Jun: 4.2 inMonmouth Junction, Jul: 4.2 inMonmouth Junction, Aug: 4.1 inMonmouth Junction, Sep: 4.0 inMonmouth Junction, Oct: 3.7 inMonmouth Junction, Nov: 3.0 inMonmouth Junction, Dec: 4.0 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Monmouth Junction3.33.14.23.73.54.24.24.14.03.73.04.0

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovMonmouth Junction, Jan: 17 daysMonmouth Junction, Feb: 16 daysMonmouth Junction, Mar: 16 daysMonmouth Junction, Apr: 15 daysMonmouth Junction, May: 15 daysMonmouth Junction, Jun: 16 daysMonmouth Junction, Jul: 18 daysMonmouth Junction, Aug: 18 daysMonmouth Junction, Sep: 18 daysMonmouth Junction, Oct: 19 daysMonmouth Junction, Nov: 17 daysMonmouth Junction, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Monmouth Junction171616151516181818191716

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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).