Princeton, NJ 08543 Hourly Weather

Mercer County2:04 AM EDT40.28°N, 74.71°W

Next 48 hours

2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Fri Oct 23 2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Sat Oct 24 35° 40° 45° 50° 55° 60° 65° %
TemperatureFeels likeChance of precipitationNight
Thursday, October 2222 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
2 AM Mostly Clear 44° 41° 0% 0.00 in N 5 79% 38° 14% 0
3 AM Mostly Clear 43° 39° 0% 0.00 in N 5 82% 38° 14% 0
4 AM Mostly Clear 42° 39° 0% 0.00 in N 5 82% 37° 15% 0
5 AM Mostly Clear 41° 38° 0% 0.00 in N 5 86% 37° 15% 0
6 AM Sunny 40° 37° 0% 0.00 in N 5 G10 85% 36° 14% 0
7 AM Sunny 39° 36° 0% 0.00 in N 5 G12 89% 36° 13% 0
8 AM Sunny 40° 36° 0% 0.00 in N 5 G14 85% 36° 12% 0
9 AM Sunny 45° 41° 0% 0.00 in N 5 G15 70% 36° 9% 1
10 AM Sunny 53° 53° 0% 0.00 in N 10 G17 52% 36° 6% 2
11 AM Sunny 57° 57° 0% 0.00 in N 10 G20 47% 37° 3% 3
12 PM Sunny 60° 60° 0% 0.00 in N 10 G21 41% 36° 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° 5% 3
3 PM Sunny 66° 66° 0% 0.00 in N 15 G21 34% 37° 5% 2
4 PM Sunny 66° 66° 0% 0.00 in N 10 G21 37% 39° 4% 1
5 PM Sunny 67° 67° 0% 0.00 in N 10 G20 39% 41° 4% 0
6 PM Clear 63° 63° 0% 0.00 in N 10 G17 46% 42° 5% 0
7 PM Mostly Clear 59° 59° 0% 0.00 in N 10 55% 43° 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 G13 74% 45° 7% 0
10 PM Mostly Clear 52° 52° 0% 0.00 in N 5 G13 77% 45° 7% 0
11 PM Mostly Clear 51° 51° 0% 0.00 in N 5 G13 83% 46° 7% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 50° 47° 0% 0.00 in N 5 G13 83% 45° 5% 0
1 AM Clear 48° 45° 0% 0.00 in N 5 G12 86% 44° 4% 0
2 AM Clear 47° 45° 0% 0.00 in N 5 G10 89% 44° 2% 0
3 AM Clear 46° 44° 0% 0.00 in N 5 G10 86% 42° 2% 0
4 AM Clear 44° 41° 0% 0.00 in N 5 G12 89% 41° 1% 0
5 AM Clear 42° 38° 0% 0.00 in N 5 G12 89% 39° 1% 0
6 AM Sunny 41° 37° 0% 0.00 in N 5 G12 89% 38° 1% 0
7 AM Sunny 40° 36° 0% 0.00 in N 5 G12 89% 37° 1% 0
8 AM Sunny 40° 36° 0% 0.00 in N 5 G12 89% 37° 1% 0
9 AM Sunny 44° 41° 0% 0.00 in NE 5 G12 73% 36° 1% 1
10 AM Sunny 49° 46° 0% 0.00 in NE 5 G13 58% 35° 2% 2
11 AM Sunny 53° 53° 0% 0.00 in NE 5 G13 50% 35° 2% 3
12 PM Sunny 56° 56° 0% 0.00 in NE 5 G12 43% 34° 2% 3
1 PM Sunny 58° 58° 0% 0.00 in NE 5 G10 39% 33° 2% 3
2 PM Sunny 59° 59° 0% 0.00 in NE 5 36% 32° 2% 3
3 PM Sunny 60° 60° 0% 0.00 in NE 5 33% 31° 2% 2
4 PM Sunny 61° 61° 0% 0.00 in NE 5 32% 31° 1% 1
5 PM Sunny 59° 59° 0% 0.00 in Calm 34% 31° 1% 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° 15% 0
8 PM Mostly Clear 45° 45° 0% 0.00 in Calm 65% 34° 22% 0
9 PM Mostly Clear 42° 42° 0% 0.00 in Calm 70% 33° 20% 0
10 PM Mostly Clear 40° 40° 0% 0.00 in Calm 76% 33° 17% 0
11 PM Mostly Clear 39° 39° 0% 0.00 in Calm 79% 33° 15% 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 Patchy Frost 37° 37° 0% 0.00 in Calm 85% 33° 18% 0
2 AM Patchy Frost 37° 37° 0% 0.00 in Calm 85% 33° 19% 0
3 AM Patchy Frost 36° 36° 0% 0.00 in Calm 85% 32° 20% 0
4 AM Patchy Frost 36° 36° 0% 0.00 in Calm 85% 32° 21% 0
5 AM Patchy Frost 35° 35° 0% 0.00 in Calm 89% 32° 22% 0
6 AM Patchy Frost 34° 34° 0% 0.00 in Calm 92% 32° 22% 0
7 AM Patchy Frost 34° 34° 0% 0.00 in Calm 96% 33° 21% 0
8 AM Patchy Frost 36° 36° 0% 0.00 in Calm 89% 33° 21% 0
9 AM Sunny 41° 41° 0% 0.00 in Calm 76% 34° 19% 1
10 AM Sunny 48° 48° 0% 0.00 in Calm 60% 35° 18% 2
11 AM Sunny 54° 54° 0% 0.00 in Calm 50% 36° 16% 3
12 PM Sunny 57° 57° 0% 0.00 in Calm 45% 36° 12% 3
1 PM Sunny 59° 59° 0% 0.00 in Calm 40% 35° 7% 3
2 PM Sunny 60° 60° 0% 0.00 in Calm 39% 35° 3% 3
3 PM Sunny 62° 62° 0% 0.00 in Calm 36% 35° 2% –
4 PM Sunny 62° 62° 0% 0.00 in Calm 36% 35° 2% –
5 PM Sunny 61° 61° 0% 0.00 in Calm 38% 35° 1% –
6 PM Clear 56° 56° 0% 0.00 in Calm 49% 37° 3% –
7 PM Clear 51° 51° 0% 0.00 in Calm 66% 40° 4% –
8 PM Mostly Clear 48° 48° 0% – Calm 80% 42° 6% –
9 PM Mostly Clear 45° 45° 0% – Calm 89% 42° 6% –
10 PM Mostly Clear 43° 43° 0% – Calm 93% 41° 6% –
11 PM Mostly Clear 41° 41° 0% – Calm 100% 41° 6% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 40° 40° 0% – Calm 100% 40° 6% –
1 AM Mostly Clear 39° 39° 0% – Calm 100% 39° 6% –
2 AM Clear 39° 39° 0% – Calm 100% 39° 2% –
3 AM Clear 38° 38° 0% – Calm 100% 38° 2% –
4 AM Clear 37° 37° 0% – Calm 100% 37° 2% –
5 AM Clear 37° 37° 0% – Calm 100% 37° 2% –
6 AM Sunny 36° 36° 0% – Calm 100% 36° 2% –
7 AM Sunny 36° 36° 0% – Calm 100% 36° 2% –
8 AM Sunny 38° 38° 0% – Calm 96% 37° 1% –
9 AM Sunny 43° 43° 0% – Calm 86% 39° 1% –
10 AM Sunny 50° 50° 0% – Calm 74% 42° 1% –
11 AM Sunny 56° 56° 0% – Calm 64% 44° 1% –
12 PM Sunny 60° 60° 0% – Calm 55% 44° 1% –
1 PM Sunny 62° 62° 0% – Calm 50% 43° 1% –
2 PM Sunny 63° 63° 0% – Calm 46% 42° 3% –
3 PM Sunny 65° 65° 0% – Calm 43% 42° 3% –
4 PM Sunny 65° 65° 0% – Calm 43% 42° 3% –
5 PM Sunny 64° 64° 0% – Calm 46% 43° 3% –
6 PM Clear 60° 60° 0% – Calm 55% 44° 3% –
7 PM Clear 56° 56° 0% – Calm 66% 45° 3% –
8 PM Mostly Clear 51° 51° 0% – Calm 83% 46° 8% –
9 PM Mostly Clear 48° 48° 0% – Calm 93% 46° 8% –
10 PM Mostly Clear 46° 46° 0% – Calm 96% 45° 8% –
11 PM Mostly Clear 44° 44° 0% – Calm 100% 44° 8% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 43° 43° 0% – Calm 100% 43° 8% –
1 AM Mostly Clear 42° 42° 0% – Calm 100% 42° 8% –
2 AM Mostly Clear 42° 42° 0% – Calm 100% 42° 7% –
3 AM Mostly Clear 42° 42° 0% – Calm 96% 41° 7% –
4 AM Mostly Clear 41° 41° 0% – Calm 96% 40° 7% –
5 AM Mostly Clear 41° 41° 0% – Calm 96% 40° 7% –
6 AM Sunny 40° 40° 0% – Calm 100% 40° 7% –
7 AM Sunny 40° 40° 0% – Calm 100% 40° 7% –
8 AM Sunny 41° 41° 0% – Calm 100% 41° 9% –
9 AM Sunny 46° 46° 0% – Calm 89% 43° 9% –
10 AM Sunny 52° 52° 0% – Calm 80% 46° 9% –
11 AM Sunny 58° 58° 0% – Calm 69% 48° 9% –
12 PM Sunny 62° 62° 0% – Calm 60% 48° 9% –
1 PM Sunny 64° 64° 0% – W 5 54% 47° 9% –
2 PM Sunny 66° 66° 0% – W 5 48% 46° 8% –
3 PM Sunny 68° 68° 0% – W 5 45% 46° 8% –
4 PM Sunny 68° 68° 0% – Calm 47% 47° 8% –
5 PM Sunny 67° 67° 0% – Calm 50% 48° 8% –
6 PM Mostly Clear 64° 64° 0% – Calm 58% 49° 8% –
7 PM Mostly Clear 60° 60° 0% – Calm 69% 50° 8% –
8 PM Mostly Clear 56° 56° 0% – Calm 80% 50° 19% –
9 PM Mostly Clear 53° 53° 0% – Calm 89% 50° 19% –
10 PM Mostly Clear 51° 51° 0% – Calm 96% 50° 19% –
11 PM Mostly Clear 49° 49° 0% – Calm 100% 49° 19% –
Tuesday, October 2724 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 48° 48° 0% – Calm 100% 48° 19% –
1 AM Mostly Clear 47° 47° 0% – Calm 100% 47° 19% –
2 AM Mostly Clear 47° 47° 0% – Calm 100% 47° 22% –
3 AM Mostly Clear 47° 47° 0% – Calm 100% 47° 22% –
4 AM Mostly Clear 46° 45° 0% – N 5 100% 46° 22% –
5 AM Mostly Clear 46° 45° 0% – N 5 100% 46° 22% –
6 AM Sunny 45° 44° 0% – N 5 100% 45° 22% –
7 AM Sunny 45° 44° 0% – N 5 100% 45° 22% –
8 AM Sunny 46° 45° 0% – N 5 100% 46° 24% –
9 AM Sunny 50° 49° 0% – N 5 89% 47° 24% –
10 AM Sunny 55° 55° 0% – N 5 74% 47° 24% –
11 AM Sunny 59° 59° 0% – N 5 67% 48° 24% –
12 PM Sunny 62° 62° 0% – N 5 60% 48° 24% –
1 PM Sunny 63° 63° 0% – NE 5 58% 48° 24% –
2 PM Mostly Sunny 64° 64° 0% – NE 5 56% 48° 36% –
3 PM Mostly Sunny 65° 65° 0% – NE 5 52% 47° 36% –
4 PM Mostly Sunny 65° 65° 0% – NE 5 50% 46° 36% –
5 PM Mostly Sunny 64° 64° 0% – NE 5 52% 46° 36% –
6 PM Partly Cloudy 62° 62° 0% – NE 5 58% 47° 36% –
7 PM Partly Cloudy 58° 58° 0% – Calm 67% 47° 36% –
8 PM Partly Cloudy 55° 55° 0% – Calm 77% 48° 40% –
9 PM Partly Cloudy 52° 52° 0% – Calm 86% 48° 40% –
10 PM Partly Cloudy 50° 50° 0% – Calm 89% 47° 40% –
11 PM Partly Cloudy 48° 48° 0% – Calm 93% 46° 40% –
Wednesday, October 2812 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 47° 47° 0% – Calm 93% 45° 40% –
1 AM Partly Cloudy 46° 46° 0% – Calm 96% 45° 40% –
2 AM Partly Cloudy 46° 46° 1% – Calm 93% 44° 45% –
3 AM Partly Cloudy 45° 45° 1% – Calm 96% 44° 45% –
4 AM Partly Cloudy 45° 44° 1% – NE 5 93% 43° 45% –
5 AM Partly Cloudy 44° 42° 1% – NE 5 96% 43° 45% –
6 AM Mostly Sunny 43° 41° 1% – NE 5 100% 43° 45% –
7 AM Mostly Sunny 43° 40° 1% – NE 5 100% 43° 45% –
8 AM Mostly Sunny 44° 41° 4% – NE 5 96% 43° 47% –
9 AM Mostly Sunny 47° 45° 4% – NE 5 89% 44° 47% –
10 AM Mostly Sunny 51° 51° 4% – E 5 80% 45° 47% –
11 AM Mostly Sunny 55° 55° 4% – E 5 72% 46° 47% –

National Weather Service forecast updated 9 hrs 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.