Monmouth County Climate
Monmouth County, New Jersey
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
53.9°F
Annual Precip
50.5"
Annual Snowfall
—
Extreme Heat Days
21
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
3,398
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Monmouth County
Climate Verdict
Monmouth County has a mild, with an average annual temperature of 53.9°F, moderately wet with 50.5 inches of annual precipitation, occasional hot days — 20.6 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 32.8°F. summers are warm — July averages 75.5°F. The 43°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Monmouth County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Monmouth County closely matches the New Jersey statewide average temperature of 53.6°F, it is somewhat wetter than average for New Jersey.
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
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.