Mercer County, NJ Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across Mercer County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny, with a high near 82. Southeast wind 0 to 5 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
- May 26 to Jun 1, 2026
- Latest sync
- May 26, 2026 12:40 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 83 degrees F.
Saturday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 10 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- May 26, 2026 12:40 AM EDT
- Coverage
- 7 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
A chance of rain showers after 2am. Mostly cloudy, with a low around 63. Southwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 2pm. Mostly cloudy, with a high near 83. Southwest wind 0 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 62. West wind 0 to 5 mph. Chance of precipitation is 20%.
Mostly sunny, with a high near 79.
Mostly clear, with a low around 55.
Sunny, with a high near 77.
Partly cloudy, with a low around 54.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 52.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 54.
Mostly sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Partly Sunny
|
82°F |
0 to 5 mph
SE
|
|
Tuesday Night
May 26
|
Mostly Cloudy then Chance Rain Showers
|
63°F |
0 to 5 mph
SW
|
|
Wednesday
May 27
|
Chance Rain Showers
|
83°F |
0 to 10 mph
SW
|
|
Wednesday Night
May 27
|
Slight Chance Showers And Thunderstorms
|
62°F |
0 to 5 mph
W
|
|
Thursday
May 28
|
Mostly Sunny
|
79°F |
5 to 10 mph
NW
|
|
Thursday Night
May 28
|
Mostly Clear
|
55°F |
5 to 10 mph
NW
|
|
Friday
May 29
|
Sunny
|
77°F |
5 to 10 mph
NW
|
|
Friday Night
May 29
|
Partly Cloudy
|
54°F |
0 to 5 mph
W
|
|
Saturday
May 30
|
Mostly Sunny
|
74°F |
5 to 10 mph
NW
|
|
Saturday Night
May 30
|
Partly Cloudy
|
52°F |
0 to 10 mph
N
|
|
Sunday
May 31
|
Mostly Sunny
|
74°F |
5 to 10 mph
N
|
|
Sunday Night
May 31
|
Partly Cloudy
|
54°F |
5 mph
NW
|
|
Monday
Jun 1
|
Mostly Sunny
|
76°F |
5 mph
NW
|
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.
