Mercer County, NJ Weather Forecast
County weather hub
Sunny
Compare major city weather across Mercer County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 64. Northwest wind around 10 mph.
County Weather Overview
This county weather page brings together forecast coverage for Mercer County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 6 of 6 mapped cities in Mercer County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 11 to Apr 16, 2026
- Latest sync
- Apr 10, 2026 11:16 AM EDT
- Forecast office
- PHI
- Source
- NOAA / NWS
Daily Outlook
This Week in Mercer County
Wednesday looks like the warmest upcoming period in Mercer County at 87 degrees F.
Saturday Night is the coolest period ahead with temperatures near 39 degrees F.
The strongest winds are forecast for Monday at about 5 to 15 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 10, 2026 11:16 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- PHI
- Radar station
- KDIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 39. North wind 0 to 10 mph.
Mostly sunny, with a high near 66. Southeast wind 0 to 10 mph.
Mostly cloudy, with a low around 50.
Mostly cloudy, with a high near 78.
Partly cloudy, with a low around 58.
Partly sunny, with a high near 84.
A slight chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 62.
Partly sunny, with a high near 87.
A slight chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 63.
Partly sunny, with a high near 83.
A slight chance of rain showers after 2am. Mostly cloudy, with a low around 58.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Sunny
|
64°F |
10 mph
NW
|
|
Saturday Night
Apr 11
|
Mostly Clear
|
39°F |
0 to 10 mph
N
|
|
Sunday
Apr 12
|
Mostly Sunny
|
66°F |
0 to 10 mph
SE
|
|
Sunday Night
Apr 12
|
Mostly Cloudy
|
50°F |
5 mph
S
|
|
Monday
Apr 13
|
Mostly Cloudy
|
78°F |
5 to 15 mph
SW
|
|
Monday Night
Apr 13
|
Partly Cloudy
|
58°F |
5 to 10 mph
SW
|
|
Tuesday
Apr 14
|
Partly Sunny
|
84°F |
5 to 10 mph
W
|
|
Tuesday Night
Apr 14
|
Slight Chance Rain Showers
|
62°F |
0 to 5 mph
SW
|
|
Wednesday
Apr 15
|
Partly Sunny
|
87°F |
0 to 10 mph
SW
|
|
Wednesday Night
Apr 15
|
Slight Chance Rain Showers
|
63°F |
5 to 10 mph
SW
|
|
Thursday
Apr 16
|
Partly Sunny
|
83°F |
5 to 10 mph
W
|
|
Thursday Night
Apr 16
|
Mostly Cloudy then Slight Chance Rain Showers
|
58°F |
0 to 5 mph
W
|
Major City Forecasts
Live forecast snapshots for major cities across Mercer County.
Coverage
Forecast coverage currently spans 6 of 6 mapped cities in Mercer County.
Largest mapped city population in this region: 82,957.
