Monmouth County Climate
Monmouth County, New Jersey
Avg Annual Temp
53.9°F
Annual Precip
50.5"
Annual Snowfall
—
Extreme Heat Days
20.6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Monmouth County Weather
A mild coastal climate profile
Monmouth County averages 53.9°F annually, placing it slightly above the national median. Proximity to the Atlantic Ocean helps moderate the sharper temperature swings found further inland.
Warmer than the state median
At 53.9°F, the county is warmer than the New Jersey state average of 53.6°F. This coastal warmth is particularly evident during the winter months.
Lush precipitation compared to inland
Monmouth receives 50.5 inches of annual rain, which is 4 inches more than Mercer County. This moisture supports a vibrant coastal ecosystem and high humidity.
Temperate winters and humid July
January averages 32.8°F, staying just above the freezing mark. While specific snowfall data is limited for this region, the county experiences 21 days of extreme heat annually.
Managing humidity and coastal storms
Dehumidifiers are a vital home addition due to the 50.5 inches of annual precipitation and coastal air. Residents should plan for 21 days of heat while monitoring for coastal weather shifts.
Frequently Asked Questions
What is the average temperature in Monmouth County?
How much rain does Monmouth County get?
How hot does Monmouth County get in summer?
How cold are winters in Monmouth County?
Track your own weather in Monmouth County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.