Princeton, NJ 08540 Hourly Weather

Mercer County10:08 PM EDT40.37°N, 74.64°W

Next 48 hours

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 4 PM 7 PM 35° 40° 45° 50° 55° 60° 65° %
TemperatureFeels likeChance of precipitationNight
Wednesday, October 212 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
10 PM Mostly Clear 50° 48° 0% 0.00 in N 5 66% 39° 25% 0
11 PM Mostly Clear 48° 46° 0% 0.00 in N 5 74% 40° 16% 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° 17% 0
1 AM Mostly Clear 45° 42° 0% 0.00 in N 5 79% 39° 18% 0
2 AM Mostly Clear 44° 41° 0% 0.00 in N 5 82% 39° 19% 0
3 AM Mostly Clear 43° 39° 0% 0.00 in N 5 82% 38° 19% 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° 11% 1
10 AM Sunny 52° 52° 0% 0.00 in N 10 G17 56% 37° 7% 2
11 AM Sunny 57° 57° 0% 0.00 in N 10 G18 47% 37° 2% 3
12 PM Sunny 60° 60° 0% 0.00 in N 10 G20 42% 37° 3% 4
1 PM Sunny 63° 63° 0% 0.00 in N 15 G21 36% 36° 3% 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° 1% 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° 1% 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 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° 20% 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° 20% 0
5 AM Patchy Frost 35° 35° 0% 0.00 in Calm 89% 32° 20% 0
6 AM Patchy Frost 34° 34° 0% 0.00 in Calm 96% 33° 21% 0
7 AM Patchy Frost 34° 34° 0% 0.00 in Calm 96% 33° 23% 0
8 AM Patchy Frost 36° 36° 0% 0.00 in Calm 92% 34° 24% 0
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 Clear 48° 48° 0% – Calm 83% 43° 5% –
9 PM Clear 45° 45° 0% – Calm 89% 42° 5% –
10 PM Clear 43° 43° 0% – Calm 96% 42° 5% –
11 PM Clear 41° 41° 0% – Calm 100% 41° 5% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 40° 40° 0% – Calm 100% 40° 5% –
1 AM Clear 39° 39° 0% – Calm 100% 39° 5% –
2 AM Clear 39° 39° 0% – Calm 100% 39° 2% –
3 AM Clear 39° 39° 0% – Calm 100% 39° 2% –
4 AM Clear 38° 38° 0% – Calm 100% 38° 2% –
5 AM Clear 38° 38° 0% – Calm 100% 38° 2% –
6 AM Sunny 37° 37° 0% – Calm 100% 37° 2% –
7 AM Sunny 37° 37° 0% – Calm 100% 37° 2% –
8 AM Sunny 38° 38° 0% – Calm 96% 37° 1% –
9 AM Sunny 43° 43° 0% – Calm 86% 39° 1% –
10 AM Sunny 49° 49° 0% – Calm 80% 43° 1% –
11 AM Sunny 55° 55° 0% – Calm 69% 45° 1% –
12 PM Sunny 59° 59° 0% – Calm 60% 45° 1% –
1 PM Sunny 61° 61° 0% – Calm 53% 44° 1% –
2 PM Sunny 63° 63° 0% – Calm 48% 43° 4% –
3 PM Sunny 65° 65° 0% – Calm 45% 43° 4% –
4 PM Sunny 65° 65° 0% – Calm 45% 43° 4% –
5 PM Sunny 64° 64° 0% – Calm 48% 44° 4% –
6 PM Clear 60° 60° 0% – Calm 58% 45° 4% –
7 PM Clear 56° 56° 0% – Calm 69% 46° 4% –
8 PM Mostly Clear 51° 51° 0% – Calm 86% 47° 7% –
9 PM Mostly Clear 48° 48° 0% – Calm 93% 46° 7% –
10 PM Mostly Clear 46° 46° 0% – Calm 96% 45° 7% –
11 PM Mostly Clear 44° 44° 0% – Calm 100% 44° 7% –
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° 7% –
1 AM Mostly Clear 42° 42° 0% – Calm 100% 42° 7% –
2 AM Mostly Clear 42° 42° 0% – Calm 100% 42° 6% –
3 AM Mostly Clear 42° 42° 0% – Calm 100% 42° 6% –
4 AM Mostly Clear 41° 41° 0% – Calm 100% 41° 6% –
5 AM Mostly Clear 41° 41° 0% – Calm 100% 41° 6% –
6 AM Sunny 40° 40° 0% – Calm 100% 40° 6% –
7 AM Sunny 40° 40° 0% – Calm 100% 40° 6% –
8 AM Sunny 41° 41° 0% – Calm 100% 41° 10% –
9 AM Sunny 46° 46° 0% – Calm 89% 43° 10% –
10 AM Sunny 52° 52° 0% – Calm 80% 46° 10% –
11 AM Sunny 58° 58° 0% – Calm 69% 48° 10% –
12 PM Sunny 62° 62° 0% – Calm 60% 48° 10% –
1 PM Sunny 64° 64° 0% – W 5 56% 48° 10% –
2 PM Sunny 66° 66° 0% – W 5 50% 47° 8% –
3 PM Sunny 68° 68° 0% – W 5 47% 47° 8% –
4 PM Sunny 68° 68° 0% – Calm 49% 48° 8% –
5 PM Sunny 67° 67° 0% – Calm 52% 49° 8% –
6 PM Mostly Clear 64° 64° 0% – Calm 60% 50° 8% –
7 PM Mostly Clear 60° 60° 0% – Calm 69% 50° 8% –
8 PM Mostly Clear 56° 56° 0% – Calm 80% 50° 20% –
9 PM Mostly Clear 53° 53° 0% – Calm 89% 50° 20% –
10 PM Mostly Clear 51° 51° 0% – Calm 96% 50° 20% –
11 PM Mostly Clear 49° 49° 0% – Calm 100% 49° 20% –
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° 20% –
1 AM Mostly Clear 48° 48° 0% – Calm 100% 48° 20% –
2 AM Mostly Clear 48° 48° 0% – Calm 96% 47° 21% –
3 AM Mostly Clear 47° 47° 0% – Calm 100% 47° 21% –
4 AM Mostly Clear 47° 47° 0% – Calm 96% 46° 21% –
5 AM Mostly Clear 46° 46° 0% – Calm 100% 46° 21% –
6 AM Sunny 45° 45° 0% – Calm 100% 45° 21% –
7 AM Sunny 45° 44° 0% – N 5 100% 45° 21% –
8 AM Sunny 46° 45° 0% – N 5 100% 46° 25% –
9 AM Sunny 49° 48° 0% – N 5 93% 47° 25% –
10 AM Sunny 54° 54° 0% – N 5 80% 48° 25% –
11 AM Sunny 58° 58° 0% – N 5 72% 49° 25% –
12 PM Sunny 61° 61° 0% – N 5 65% 49° 25% –
1 PM Sunny 63° 63° 0% – NE 5 60% 49° 25% –
2 PM Mostly Sunny 64° 64° 0% – NE 5 58% 49° 36% –
3 PM Mostly Sunny 65° 65° 0% – NE 5 54% 48° 36% –
4 PM Mostly Sunny 65° 65° 0% – Calm 52% 47° 36% –
5 PM Mostly Sunny 64° 64° 0% – Calm 54% 47° 36% –
6 PM Partly Cloudy 62° 62° 0% – Calm 60% 48° 36% –
7 PM Partly Cloudy 58° 58° 0% – Calm 69% 48° 36% –
8 PM Partly Cloudy 55° 55° 1% – Calm 80% 49° 39% –
9 PM Partly Cloudy 52° 52° 1% – Calm 89% 49° 39% –
10 PM Partly Cloudy 50° 50° 1% – Calm 93% 48° 39% –
11 PM Partly Cloudy 48° 48° 1% – Calm 96% 47° 39% –
Wednesday, October 289 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 47° 47° 1% – Calm 96% 46° 39% –
1 AM Partly Cloudy 46° 46° 1% – Calm 96% 45° 39% –
2 AM Partly Cloudy 46° 46° 2% – Calm 93% 44° 41% –
3 AM Partly Cloudy 45° 45° 2% – Calm 93% 43° 41% –
4 AM Partly Cloudy 45° 44° 2% – NE 5 93% 43° 41% –
5 AM Partly Cloudy 44° 42° 2% – NE 5 96% 43° 41% –
6 AM Mostly Sunny 43° 41° 2% – NE 5 100% 43° 41% –
7 AM Mostly Sunny 43° 41° 2% – NE 5 100% 43° 41% –
8 AM Mostly Sunny 44° 42° 4% – NE 5 96% 43° 49% –

National Weather Service forecast updated 5 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 4Conservative index and reflects what the press published. Terms of use.