Princeton, NJ 08542 Hourly Weather

Mercer County11:35 PM EDT40.35°N, 74.66°W
Frost Advisory from 12:00 AM Sat until 9:00 AM Sat

Next 48 hours

11 PM Sat Oct 24 2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Sun Oct 25 2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 30° 40° 50° 60° %
TemperatureFeels likeChance of precipitationNight
Friday, October 231 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
11 PM Patchy Frost 39° 36° 0% 0.00 in NE 5 59% 26° 35% 0
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Patchy Frost 38° 34° 0% 0.00 in N 5 62% 26° 30% 0
1 AM Patchy Frost 37° 33° 0% 0.00 in N 5 64% 26° 30% 0
2 AM Patchy Frost 37° 33° 0% 0.00 in N 5 64% 26° 26% 0
3 AM Areas Of Frost 36° 32° 0% 0.00 in N 5 67% 26° 24% 0
4 AM Areas Of Frost 35° 31° 0% 0.00 in N 5 72% 27° 37% 0
5 AM Areas Of Frost 35° 31° 0% 0.00 in N 5 72% 27° 48% 0
6 AM Areas Of Frost 34° 30° 0% 0.00 in N 5 75% 27° 36% 0
7 AM Areas Of Frost 35° 31° 0% 0.00 in N 5 72% 27° 31% 0
8 AM Patchy Frost 37° 32° 0% 0.00 in N 5 72% 29° 38% 0
9 AM Mostly Sunny 42° 39° 0% 0.00 in N 5 65% 31° 45% 1
10 AM Mostly Sunny 50° 48° 0% 0.00 in NE 5 52% 33° 31% 2
11 AM Mostly Sunny 54° 54° 0% 0.00 in NE 5 48% 35° 28% 3
12 PM Mostly Sunny 57° 57° 0% 0.00 in Calm 43% 35° 26% 3
1 PM Mostly Sunny 60° 60° 0% 0.00 in SE 5 37% 34° 27% 3
2 PM Mostly Sunny 61° 61° 0% 0.00 in S 5 36% 34° 29% 3
3 PM Sunny 61° 61° 0% 0.00 in SW 5 35% 33° 22% 2
4 PM Sunny 62° 62° 0% 0.00 in SW 5 33% 33° 24% 1
5 PM Sunny 61° 61° 0% 0.00 in SW 5 G10 33% 32° 20% 0
6 PM Mostly Clear 57° 57° 0% 0.00 in SW 5 G10 37% 31° 23% 0
7 PM Mostly Clear 52° 52° 0% 0.00 in SW 5 G10 43% 30° 20% 0
8 PM Mostly Clear 45° 42° 0% 0.00 in SW 5 G10 53% 29° 20% 0
9 PM Mostly Clear 43° 40° 0% 0.00 in SW 5 57% 29° 11% 0
10 PM Mostly Clear 41° 38° 0% 0.00 in SW 5 62% 29° 13% 0
11 PM Patchy Frost 39° 37° 0% 0.00 in SW 5 67% 29° 15% 0
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Patchy Frost 38° 36° 0% 0.00 in W 5 73% 30° 14% 0
1 AM Areas Of Frost 37° 34° 0% 0.00 in W 5 79% 31° 13% 0
2 AM Areas Of Frost 36° 32° 0% 0.00 in W 5 85% 32° 12% 0
3 AM Areas Of Frost 35° 31° 0% 0.00 in NW 5 92% 33° 11% 0
4 AM Areas Of Frost 34° 29° 0% 0.00 in NW 5 G10 100% 34° 11% 0
5 AM Areas Of Frost 34° 29° 0% 0.00 in NW 5 G10 100% 34° 11% 0
6 AM Widespread Frost 33° 28° 0% 0.00 in NW 5 G10 100% 33° 11% 0
7 AM Widespread Frost 33° 28° 0% 0.00 in NW 5 G10 100% 33° 10% 0
8 AM Areas Of Frost 35° 30° 0% 0.00 in NW 5 G10 100% 35° 10% 0
9 AM Sunny 42° 38° 0% 0.00 in NW 5 G10 82% 37° 10% 1
10 AM Sunny 49° 47° 0% 0.00 in NW 5 G10 63% 37° 11% 2
11 AM Sunny 56° 56° 0% 0.00 in NW 5 G10 53% 39° 11% 3
12 PM Sunny 60° 60° 0% 0.00 in W 5 G10 46% 39° 11% 3
1 PM Sunny 62° 62° 0% 0.00 in W 5 G10 41% 38° 11% 4
2 PM Sunny 64° 64° 0% 0.00 in W 5 G10 35% 36° 11% 3
3 PM Sunny 65° 65° 0% 0.00 in W 5 G10 35% 37° 11% 2
4 PM Sunny 65° 65° 0% 0.00 in W 5 37% 38° 10% 1
5 PM Sunny 63° 63° 0% 0.00 in W 5 39% 38° 10% 0
6 PM Mostly Clear 59° 59° 0% 0.00 in W 5 47% 39° 11% 0
7 PM Mostly Clear 52° 52° 0% 0.00 in W 5 61% 39° 13% 0
8 PM Mostly Clear 47° 45° 0% 0.00 in N 5 74% 39° 14% 0
9 PM Mostly Clear 44° 41° 0% 0.00 in N 5 82% 39° 13% 0
10 PM Mostly Clear 42° 39° 0% 0.00 in N 5 86% 38° 12% 0
11 PM Mostly Clear 41° 38° 0% 0.00 in N 5 89% 38° 12% 0
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 40° 37° 0% 0.00 in W 5 89% 37° 12% 0
1 AM Mostly Clear 39° 35° 0% 0.00 in W 5 92% 37° 12% 0
2 AM Mostly Clear 39° 35° 0% 0.00 in W 5 89% 36° 12% 0
3 AM Mostly Clear 38° 34° 0% 0.00 in W 5 92% 36° 12% –
4 AM Mostly Clear 38° 33° 0% 0.00 in W 5 G12 89% 35° 12% –
5 AM Mostly Clear 38° 33° 0% 0.00 in W 5 G12 89% 35° 12% –
6 AM Sunny 37° 32° 0% 0.00 in W 5 G12 89% 34° 12% –
7 AM Sunny 36° 30° 0% 0.00 in W 5 G13 89% 33° 11% –
8 AM Sunny 38° 33° 0% – W 5 G13 89% 35° 11% –
9 AM Sunny 44° 40° 0% – W 5 G13 79% 38° 11% –
10 AM Sunny 51° 51° 0% – W 5 G13 68% 41° 11% –
11 AM Sunny 58° 58° 0% – W 5 G13 57% 43° 11% –
12 PM Sunny 62° 62° 0% – W 5 G13 50% 43° 11% –
1 PM Sunny 66° 66° 0% – W 10 43% 43° 11% –
2 PM Sunny 67° 67° 0% – W 10 42% 43° 11% –
3 PM Sunny 69° 69° 0% – W 10 40% 44° 11% –
4 PM Sunny 69° 69° 0% – W 5 G13 40% 44° 10% –
5 PM Sunny 67° 67° 0% – W 5 G13 45% 45° 10% –
6 PM Mostly Clear 63° 63° 0% – W 5 G13 54% 46° 12% –
7 PM Mostly Clear 58° 58° 0% – W 5 G12 64% 46° 13% –
8 PM Mostly Clear 57° 57° 0% – Calm 72% 48° 6% –
9 PM Mostly Clear 55° 55° 0% – Calm 77% 48° 6% –
10 PM Mostly Clear 53° 53° 0% – Calm 83% 48° 6% –
11 PM Mostly Clear 52° 52° 0% – Calm 86% 48° 6% –
Tuesday, October 2724 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 51° 51° 0% – Calm 86% 47° 6% –
1 AM Mostly Clear 51° 51° 0% – N 5 83% 46° 6% –
2 AM Mostly Clear 50° 49° 0% – N 5 83% 45° 7% –
3 AM Mostly Clear 49° 48° 0% – N 5 83% 44° 7% –
4 AM Mostly Clear 48° 46° 0% – N 5 86% 44° 7% –
5 AM Mostly Clear 47° 45° 0% – N 5 86% 43° 7% –
6 AM Sunny 46° 44° 0% – N 5 86% 42° 7% –
7 AM Sunny 46° 44° 0% – N 5 G10 86% 42° 7% –
8 AM Sunny 47° 45° 0% – N 5 G10 83% 42° 7% –
9 AM Sunny 50° 48° 0% – N 5 G12 74% 42° 7% –
10 AM Sunny 54° 54° 0% – N 5 G13 66% 43° 7% –
11 AM Sunny 57° 57° 0% – N 5 G13 59% 43° 7% –
12 PM Sunny 59° 59° 0% – N 5 G12 55% 43° 7% –
1 PM Sunny 60° 60° 0% – NE 5 G10 51% 42° 7% –
2 PM Sunny 61° 61° 0% – NE 5 48% 41° 11% –
3 PM Sunny 62° 62° 0% – NE 5 44% 40° 11% –
4 PM Sunny 63° 63° 0% – NE 5 41% 39° 11% –
5 PM Sunny 62° 62° 0% – NE 5 41% 38° 11% –
6 PM Mostly Clear 59° 59° 0% – Calm 47% 39° 11% –
7 PM Mostly Clear 56° 56° 0% – Calm 55% 40° 11% –
8 PM Mostly Clear 52° 52° 0% – Calm 66% 41° 21% –
9 PM Mostly Clear 49° 49° 0% – Calm 74% 41° 21% –
10 PM Mostly Clear 47° 47° 0% – Calm 76% 40° 21% –
11 PM Mostly Clear 45° 45° 0% – Calm 79% 39° 21% –
Wednesday, October 2824 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 44° 44° 0% – Calm 79% 38° 21% –
1 AM Mostly Clear 43° 43° 0% – Calm 79% 37° 21% –
2 AM Partly Cloudy 43° 43° 1% – Calm 76% 36° 32% –
3 AM Partly Cloudy 43° 43° 1% – Calm 73% 35° 32% –
4 AM Partly Cloudy 42° 42° 1% – Calm 76% 35° 32% –
5 AM Partly Cloudy 42° 42° 1% – Calm 76% 35° 32% –
6 AM Mostly Sunny 41° 41° 1% – Calm 79% 35° 32% –
7 AM Mostly Sunny 41° 39° 1% – NE 5 79% 35° 32% –
8 AM Mostly Sunny 42° 40° 1% – NE 5 79% 36° 44% –
9 AM Mostly Sunny 45° 44° 1% – NE 5 73% 37° 44% –
10 AM Mostly Sunny 49° 48° 1% – NE 5 68% 39° 44% –
11 AM Mostly Sunny 53° 53° 1% – NE 5 61% 40° 44% –
12 PM Mostly Sunny 55° 55° 1% – E 5 59% 41° 44% –
1 PM Mostly Sunny 57° 57° 1% – Calm 55% 41° 44% –
2 PM Partly Sunny 58° 58° 1% – Calm 53% 41° 55% –
3 PM Partly Sunny 60° 60° 1% – Calm 49% 41° 55% –
4 PM Partly Sunny 60° 60° 1% – Calm 47% 40° 55% –
5 PM Partly Sunny 60° 60° 1% – Calm 47% 40° 55% –
6 PM Mostly Cloudy 57° 57° 1% – Calm 55% 41° 55% –
7 PM Mostly Cloudy 54° 54° 1% – Calm 66% 43° 55% –
8 PM Mostly Cloudy 50° 50° 0% – Calm 80% 44° 62% –
9 PM Mostly Cloudy 48° 48° 0% – Calm 86% 44° 62% –
10 PM Mostly Cloudy 46° 46° 0% – Calm 93% 44° 62% –
11 PM Mostly Cloudy 45° 45° 0% – Calm 93% 43° 62% –
Thursday, October 2923 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Cloudy 44° 44° 0% – Calm 96% 43° 62% –
1 AM Mostly Cloudy 44° 44° 0% – Calm 93% 42° 62% –
2 AM Partly Cloudy 44° 44° 1% – Calm 93% 42° 44% –
3 AM Partly Cloudy 44° 44° 1% – Calm 93% 42° 44% –
4 AM Partly Cloudy 44° 44° 1% – Calm 89% 41° 44% –
5 AM Partly Cloudy 44° 44° 1% – Calm 89% 41° 44% –
6 AM Mostly Sunny 43° 43° 1% – Calm 93% 41° 44% –
7 AM Mostly Sunny 43° 43° 1% – Calm 93% 41° 44% –
8 AM Mostly Sunny 44° 44° 3% – Calm 93% 42° 49% –
9 AM Mostly Sunny 48° 48° 3% – Calm 86% 44° 49% –
10 AM Mostly Sunny 53° 53° 3% – Calm 74% 45° 49% –
11 AM Mostly Sunny 57° 57° 3% – Calm 69% 47° 49% –
12 PM Mostly Sunny 60° 60° 3% – Calm 64% 48° 49% –
1 PM Mostly Sunny 62° 62° 3% – S 5 60% 48° 49% –
2 PM Mostly Sunny 63° 63° 2% – S 5 58% 48° 41% –
3 PM Mostly Sunny 65° 65° 2% – S 5 54% 48° 41% –
4 PM Mostly Sunny 65° 65° 2% – Calm 54% 48° 41% –
5 PM Mostly Sunny 65° 65° 2% – Calm 54% 48° 41% –
6 PM Partly Cloudy 62° 62° 2% – Calm 62% 49° 41% –
7 PM Partly Cloudy 59° 59° 2% – Calm 72% 50° 41% –
8 PM Partly Cloudy 55° 55° 2% – Calm 83% 50° 44% –
9 PM Partly Cloudy 52° 52° 2% – Calm 93% 50° 44% –
10 PM Partly Cloudy 50° 50° 2% – Calm 96% 49° 44% –

National Weather Service forecast updated 19 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.