Princeton, NJ 08540 Hourly Weather

Mercer County4:06 PM EDT40.37°N, 74.64°W

Next 48 hours

4 PM 7 PM 10 PM Thu Oct 22 1 AM 4 AM 7 AM 10 AM 1 PM 4 PM 7 PM 10 PM Fri Oct 23 1 AM 4 AM 7 AM 10 AM 1 PM 35° 40° 45° 50° 55° 60° 65° %
TemperatureFeels likeChance of precipitationNight
Wednesday, October 218 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
4 PM Mostly Sunny 61° 61° 0% 0.00 in N 10 G16 39% 36° 38% 1
5 PM Mostly Sunny 61° 61° 0% 0.00 in N 5 G15 39% 36° 43% 0
6 PM Partly Cloudy 58° 58° 0% 0.00 in N 5 G13 44% 36° 43% 0
7 PM Partly Cloudy 56° 56° 0% 0.00 in N 5 G12 47% 36° 43% 0
8 PM Partly Cloudy 53° 53° 0% 0.00 in N 5 G10 54% 37° 43% 0
9 PM Partly Cloudy 51° 51° 0% 0.00 in N 5 61% 38° 36% 0
10 PM Partly Cloudy 50° 48° 0% 0.00 in N 5 66% 39° 28% 0
11 PM Mostly Clear 48° 46° 0% 0.00 in N 5 74% 40° 21% 0
Thursday, October 2224 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 45° 42° 0% 0.00 in N 5 82% 40° 20% 0
1 AM Mostly Clear 45° 42° 0% 0.00 in N 5 79% 39° 19% 0
2 AM Mostly Clear 44° 41° 0% 0.00 in N 5 82% 39° 18% 0
3 AM Mostly Clear 43° 39° 0% 0.00 in N 5 82% 38° 18% 0
4 AM Mostly Clear 42° 39° 0% 0.00 in N 5 86% 38° 18% 0
5 AM Mostly Clear 41° 38° 0% 0.00 in N 5 G10 89% 38° 18% 0
6 AM Sunny 40° 37° 0% 0.00 in N 5 G10 89% 37° 17% 0
7 AM Sunny 39° 36° 0% 0.00 in N 5 G13 92% 37° 17% 0
8 AM Sunny 40° 37° 0% 0.00 in N 5 G14 85% 36° 16% 0
9 AM Sunny 45° 41° 0% 0.00 in N 5 G15 70% 36° 12% 1
10 AM Sunny 52° 52° 0% 0.00 in N 10 G17 56% 37° 8% 2
11 AM Sunny 57° 57° 0% 0.00 in N 10 G18 47% 37° 4% 3
12 PM Sunny 60° 60° 0% 0.00 in N 10 G20 42% 37° 4% 4
1 PM Sunny 63° 63° 0% 0.00 in N 15 G21 36% 36° 4% 4
2 PM Sunny 65° 65° 0% 0.00 in N 15 G21 34% 36° 4% 3
3 PM Sunny 66° 66° 0% 0.00 in N 15 G21 36% 38° 4% 2
4 PM Sunny 66° 66° 0% 0.00 in N 10 G21 37% 39° 4% 1
5 PM Sunny 66° 66° 0% 0.00 in N 10 G20 40% 41° 4% 0
6 PM Clear 62° 62° 0% 0.00 in N 10 G17 48% 42° 5% 0
7 PM Mostly Clear 59° 59° 0% 0.00 in N 10 57% 44° 6% 0
8 PM Mostly Clear 57° 57° 0% 0.00 in N 5 G13 64% 45° 7% 0
9 PM Mostly Clear 53° 53° 0% 0.00 in N 5 G12 74% 45° 7% 0
10 PM Mostly Clear 52° 52° 0% 0.00 in N 5 G13 80% 46° 6% 0
11 PM Mostly Clear 51° 51° 0% 0.00 in N 5 G13 83% 46° 6% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 49° 46° 0% 0.00 in N 5 G13 86% 45° 4% 0
1 AM Clear 48° 45° 0% 0.00 in N 5 G12 86% 44° 3% 0
2 AM Clear 47° 45° 0% 0.00 in N 5 G12 86% 43° 1% 0
3 AM Clear 45° 42° 0% 0.00 in N 5 G12 89% 42° 1% 0
4 AM Clear 44° 41° 0% 0.00 in N 5 G12 86% 40° 1% 0
5 AM Clear 42° 38° 0% 0.00 in N 5 G13 89% 39° 1% 0
6 AM Sunny 41° 37° 0% 0.00 in N 5 G12 89% 38° 0% 0
7 AM Sunny 40° 37° 0% 0.00 in N 5 G12 89% 37° 1% 0
8 AM Sunny 40° 37° 0% 0.00 in N 5 G12 89% 37° 1% 0
9 AM Sunny 44° 41° 0% 0.00 in N 5 G12 73% 36° 0% 1
10 AM Sunny 49° 47° 0% 0.00 in NE 5 G13 58% 35° 1% 2
11 AM Sunny 53° 53° 0% 0.00 in NE 5 G13 48% 34° 1% 3
12 PM Sunny 56° 56° 0% 0.00 in NE 5 G12 43% 34° 1% 3
1 PM Sunny 58° 58° 0% 0.00 in NE 5 G10 39% 33° 1% 3
2 PM Sunny 58° 58° 0% 0.00 in NE 5 39% 33° 1% 3
3 PM Sunny 60° 60° 0% 0.00 in NE 5 35% 32° 1% 2
4 PM Sunny 60° 60° 0% 0.00 in Calm 35% 32° 2% 1
5 PM Sunny 59° 59° 0% 0.00 in Calm 36% 32° 2% 0
6 PM Mostly Clear 55° 55° 0% 0.00 in Calm 41% 32° 8% 0
7 PM Mostly Clear 50° 50° 0% 0.00 in Calm 52% 33° 14% 0
8 PM Mostly Clear 45° 45° 0% 0.00 in Calm 65% 34° 20% 0
9 PM Mostly Clear 42° 42° 0% 0.00 in Calm 70% 33° 18% 0
10 PM Mostly Clear 40° 40° 0% 0.00 in Calm 76% 33° 16% 0
11 PM Mostly Clear 39° 39° 0% 0.00 in Calm 79% 33° 14% 0
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 38° 38° 0% 0.00 in Calm 82% 33° 16% 0
1 AM Mostly Clear 37° 37° 0% 0.00 in Calm 85% 33° 18% 0
2 AM Mostly Clear 37° 37° 0% 0.00 in Calm 85% 33° 20% 0
3 AM Mostly Clear 36° 36° 0% 0.00 in Calm 85% 32° 20% –
4 AM Mostly Clear 36° 36° 0% 0.00 in Calm 85% 32° 20% –
5 AM Mostly Clear 35° 35° 0% 0.00 in Calm 89% 32° 20% –
6 AM Sunny 34° 34° 0% 0.00 in Calm 96% 33° 21% –
7 AM Sunny 34° 34° 0% 0.00 in Calm 96% 33° 23% –
8 AM Sunny 36° 36° 0% 0.00 in Calm 92% 34° 24% –
9 AM Sunny 41° 41° 0% 0.00 in Calm 79% 35° 21% –
10 AM Sunny 47° 47° 0% 0.00 in Calm 65% 36° 17% –
11 AM Sunny 53° 53° 0% 0.00 in Calm 54% 37° 14% –
12 PM Sunny 57° 57° 0% 0.00 in Calm 45% 36° 10% –
1 PM Sunny 59° 59° 0% 0.00 in Calm 42% 36° 6% –
2 PM Sunny 60° 60° 0% 0.00 in Calm 41% 36° 2% –
3 PM Sunny 62° 62° 0% 0.00 in Calm 38% 36° 2% –
4 PM Sunny 62° 62° 0% 0.00 in Calm 38% 36° 1% –
5 PM Sunny 60° 60° 0% 0.00 in Calm 41% 36° 1% –
6 PM Clear 56° 56° 0% 0.00 in Calm 51% 38° 2% –
7 PM Clear 50° 50° 0% 0.00 in Calm 71% 41° 4% –
8 PM Mostly Clear 49° 49° 0% – Calm 68% 39° 6% –
9 PM Mostly Clear 46° 46° 0% – Calm 76% 39° 6% –
10 PM Mostly Clear 44° 44° 0% – Calm 82% 39° 6% –
11 PM Mostly Clear 42° 42° 0% – Calm 89% 39° 6% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 41° 41° 0% – Calm 89% 38° 6% –
1 AM Mostly Clear 40° 40° 0% – Calm 92% 38° 6% –
2 AM Clear 40° 40° 0% – Calm 89% 37° 2% –
3 AM Clear 39° 39° 0% – Calm 89% 36° 2% –
4 AM Clear 39° 39° 0% – Calm 89% 36° 2% –
5 AM Clear 38° 38° 0% – Calm 92% 36° 2% –
6 AM Sunny 37° 37° 0% – Calm 96% 36° 2% –
7 AM Sunny 36° 36° 0% – Calm 100% 36° 2% –
8 AM Sunny 37° 37° 0% – Calm 100% 37° 2% –
9 AM Sunny 42° 42° 0% – Calm 89% 39° 2% –
10 AM Sunny 49° 49° 0% – Calm 74% 41° 2% –
11 AM Sunny 55° 55° 0% – Calm 61% 42° 2% –
12 PM Sunny 59° 59° 0% – Calm 53% 42° 2% –
1 PM Sunny 61° 61° 0% – Calm 48% 41° 2% –
2 PM Sunny 63° 63° 0% – Calm 44% 41° 3% –
3 PM Sunny 65° 65° 0% – Calm 41% 41° 3% –
4 PM Sunny 65° 65° 0% – Calm 43% 42° 3% –
5 PM Sunny 64° 64° 0% – Calm 46% 43° 3% –
6 PM Clear 61° 61° 0% – Calm 51% 43° 3% –
7 PM Clear 57° 57° 0% – Calm 62% 44° 3% –
8 PM Mostly Clear 53° 53° 0% – Calm 71% 44° 10% –
9 PM Mostly Clear 50° 50° 0% – Calm 80% 44° 10% –
10 PM Mostly Clear 47° 47° 0% – Calm 89% 44° 10% –
11 PM Mostly Clear 45° 45° 0% – Calm 96% 44° 10% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 44° 44° 0% – Calm 96% 43° 10% –
1 AM Mostly Clear 44° 44° 0% – Calm 96% 43° 10% –
2 AM Mostly Clear 44° 44° 0% – Calm 93% 42° 8% –
3 AM Mostly Clear 43° 43° 0% – Calm 96% 42° 8% –
4 AM Mostly Clear 42° 42° 0% – Calm 96% 41° 8% –
5 AM Mostly Clear 41° 41° 0% – Calm 100% 41° 8% –
6 AM Sunny 40° 40° 0% – Calm 100% 40° 8% –
7 AM Sunny 40° 40° 0% – Calm 100% 40° 8% –
8 AM Sunny 42° 42° 0% – Calm 96% 41° 12% –
9 AM Sunny 46° 46° 0% – Calm 86% 42° 12% –
10 AM Sunny 52° 52° 0% – Calm 74% 44° 12% –
11 AM Sunny 57° 57° 0% – Calm 67% 46° 12% –
12 PM Sunny 61° 61° 0% – Calm 60% 47° 12% –
1 PM Sunny 64° 64° 0% – W 5 54% 47° 12% –
2 PM Sunny 66° 66° 0% – W 5 50% 47° 12% –
3 PM Sunny 68° 68° 0% – W 5 47% 47° 12% –
4 PM Sunny 68° 68° 0% – Calm 47% 47° 12% –
5 PM Sunny 67° 67° 0% – Calm 49% 47° 12% –
6 PM Mostly Clear 64° 64° 0% – Calm 56% 48° 12% –
7 PM Mostly Clear 61° 61° 0% – Calm 62% 48° 12% –
8 PM Mostly Clear 57° 57° 0% – Calm 75% 49° 21% –
9 PM Mostly Clear 54° 54° 0% – Calm 83% 49° 21% –
10 PM Mostly Clear 52° 52° 0% – Calm 89% 49° 21% –
11 PM Mostly Clear 51° 51° 0% – Calm 89% 48° 21% –
Tuesday, October 2724 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 50° 50° 0% – Calm 89% 47° 21% –
1 AM Mostly Clear 49° 49° 0% – Calm 89% 46° 21% –
2 AM Mostly Clear 49° 49° 0% – Calm 86% 45° 25% –
3 AM Mostly Clear 48° 48° 0% – Calm 86% 44° 25% –
4 AM Mostly Clear 48° 48° 0% – Calm 86% 44° 25% –
5 AM Mostly Clear 47° 47° 0% – Calm 89% 44° 25% –
6 AM Sunny 46° 46° 0% – Calm 93% 44° 25% –
7 AM Sunny 46° 46° 0% – Calm 93% 44° 25% –
8 AM Mostly Sunny 47° 47° 0% – Calm 89% 44° 30% –
9 AM Mostly Sunny 50° 49° 0% – NW 5 83% 45° 30% –
10 AM Mostly Sunny 53° 53° 0% – NW 5 77% 46° 30% –
11 AM Mostly Sunny 57° 57° 0% – NW 5 G10 69% 47° 30% –
12 PM Mostly Sunny 60° 60° 0% – NW 5 G10 62% 47° 30% –
1 PM Mostly Sunny 62° 62° 0% – NW 5 G10 58% 47° 30% –
2 PM Mostly Sunny 63° 63° 1% – NW 5 G10 56% 47° 35% –
3 PM Mostly Sunny 64° 64° 1% – NW 5 54% 47° 35% –
4 PM Mostly Sunny 64° 64° 1% – NW 5 52% 46° 35% –
5 PM Mostly Sunny 63° 63° 1% – NW 5 54% 46° 35% –
6 PM Partly Cloudy 61° 61° 1% – NW 5 58% 46° 35% –
7 PM Partly Cloudy 58° 58° 1% – Calm 64% 46° 35% –
8 PM Partly Cloudy 55° 55° 0% – Calm 72% 46° 45% –
9 PM Partly Cloudy 53° 53° 0% – Calm 77% 46° 45% –
10 PM Partly Cloudy 51° 51° 0% – Calm 80% 45° 45% –
11 PM Partly Cloudy 49° 49° 0% – Calm 83% 44° 45% –

National Weather Service forecast updated 1 hr ago. Precipitation amounts are the forecast liquid equivalent for each hour.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.