Weather forecast for tomorrow
Princeton Junction, NJ

Weather forecast for tomorrow

Wednesday, Jun 18.

PM Thunderstorms
5:26 am

8:32 pm
EDT
PM Thunderstorms
86°F / 72°F
  • Wind: 8mph SSW
  • Humidity: 83%
  • Precip. probability: 67%
  • Precipitation: 0.47"
  • UV index: 7
Tomorrow, in Princeton Junction, showers and thunder will dominate the later part of the day.
With a high probability, moderate precipitation is predicted. Expected temperatures will peak at a hot 86°F and dip to a minimum of a delightful 71.6°F.
The maximum heat index, which factors the actual air temperature with the relative humidity, is calculated to be a sizzling 102.2°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Conditions will lean hotter, as the high of 86°F is more representative of July's climate.
Sunrise will be at 5:26 am and sunset at 8:32 pm; tomorrow's daylight will last for 15h and 6min.

Frequently asked questions

What is the weather forecast for Princeton Junction for tomorrow?
Tomorrow, afternoon thunderstorms are expected, possibly with frequent lightning.
Will it rain tomorrow?
Moderate precipitation of 0.47" is expected. The chance of rainfall is 67%.
What will be the maximum temperature tomorrow?
Tomorrow, the maximum temperature in Princeton Junction will be 86°F, while the minimum temperature will be 71.6°F. The maximum heat index, which represents the influence of relative humidity on air temperature, is evaluated at 102.2°F.
The highest temperature will be a few degrees higher than the average maximum of 78.4°F in June. The lowest temperature will be noticeably higher than the average low of 61°F.
When is the sunrise / sunset tomorrow?
On Wednesday, in Princeton Junction, sunrise will be at 5:26 am and sunset at 8:32 pm (EDT).
How many hours of daylight will Princeton Junction have tomorrow?
In Princeton Junction, tomorrow, there will be 15h and 6min of daylight.

Hourly weather forecast

12 am
  • 68°F
  • Feels like:
    70°F
Showers
Showers
  • Wind: 4mph SSE
  • Pressure: 29.94"Hg
  • Humidity: 96%
  • Precip. probability: 38%
  • Precipitation: 0.04"
  • Visibility: 2mi
2 am
  • 68°F
  • Feels like:
    70°F
Showers
Showers
  • Wind: 3mph SSE
  • Pressure: 29.94"Hg
  • Humidity: 97%
  • Precip. probability: 35%
  • Precipitation: 0.04"
  • Visibility: 2mi
4 am
  • 68°F
  • Feels like:
    70°F
Few Showers
Few Showers
  • Wind: 2mph S
  • Pressure: 29.94"Hg
  • Humidity: 98%
  • Precip. probability: 31%
  • Precipitation: 0.04"
  • Visibility: 2mi
Sunrise: 5:26 am
6 am
  • 66°F
  • Feels like:
    70°F
Showers
Showers
  • Wind: 2mph S
  • Pressure: 29.94"Hg
  • Humidity: 100%
  • Precip. probability: 35%
  • Precipitation: 0.04"
  • Visibility: 1mi
8 am
  • 70°F
  • Feels like:
    72°F
Cloudy
Cloudy
  • Wind: 4mph S
  • Pressure: 29.94"Hg
  • Humidity: 98%
  • Precip. probability: 17%
  • Precipitation: 0"
  • Visibility: 2mi
10 am
  • 75°F
  • Feels like:
    77°F
Cloudy
Cloudy
  • Wind: 4mph SSW
  • Pressure: 29.94"Hg
  • Humidity: 89%
  • Precip. probability: 16%
  • Precipitation: 0"
  • Visibility: 5mi
12 pm
  • 79°F
  • Feels like:
    84°F
Cloudy
Cloudy
  • Wind: 5mph SSW
  • Pressure: 29.91"Hg
  • Humidity: 80%
  • Precip. probability: 14%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 82°F
  • Feels like:
    90°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph SSW
  • Pressure: 29.88"Hg
  • Humidity: 73%
  • Precip. probability: 16%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 82°F
  • Feels like:
    91°F
Thunderstorms
Thunderstorms
  • Wind: 8mph WSW
  • Pressure: 29.85"Hg
  • Humidity: 75%
  • Precip. probability: 67%
  • Precipitation: 0.16"
  • Visibility: 6mi
6 pm
  • 81°F
  • Feels like:
    88°F
Showers
Showers
  • Wind: 6mph SSW
  • Pressure: 29.85"Hg
  • Humidity: 80%
  • Precip. probability: 50%
  • Precipitation: 0.04"
  • Visibility: 7mi
8 pm
  • 79°F
  • Feels like:
    84°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 4mph SSW
  • Pressure: 29.85"Hg
  • Humidity: 84%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 8mi
Sunset: 8:32 pm
10 pm
  • 73°F
  • Feels like:
    77°F
Partly Cloudy
Partly Cloudy
  • Wind: 4mph SSW
  • Pressure: 29.85"Hg
  • Humidity: 92%
  • Precip. probability: 12%
  • Precipitation: 0"
  • Visibility: 6mi
Tomorrow, a combination of dull, rainy and lightning-active weather is expected.
Rainfall is predicted at 12 am, and from 2 am to 6 am, and from 3 pm to 7 pm. With moderate precipitation of 0.16", the most intense rain will be falling at 3 pm and 4 pm.
The temperature will be between a minimum of 66.2°F and a maximum of 84.2°F. The feels-like temperature will vary between the lowest temperature of 69.8°F and the highest temperature of 91.4°F. The hottest part of the day is anticipated around 3 pm.
The maximum is expected to resemble July's average high of 84.7°F rather than June's. The minimum temperature will be also more close to July's average low of 66.9°F than June's typical 61°F.
Updated: Jun 17, 2025 @ 13:45:40 UTC
Published by: Weather U.S. | About Us
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