Weather forecast for tomorrow
Harrow, PA

Weather forecast for tomorrow

Thursday, Jun 19.

PM Thunderstorms
5:28 am

8:35 pm
EDT
PM Thunderstorms
90°F / 63°F
  • Wind: 10mph SW
  • Humidity: 73%
  • Precip. probability: 57%
  • Precipitation: 0.35"
  • UV index: 9
Tomorrow, in Harrow, stormy weather with frequent thunder and rain bursts is expected.
With a high probability, light precipitation is forecasted. Temperatures will see a substantial oscillation, reaching a high of a tropical 89.6°F and dropping to a low of a comfortable 62.6°F.
The maximum heat index, which factors the actual air temperature with the relative humidity, is computed to be a scorching 107.6°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Forecast models suggest hotter conditions, with a peak that mirrors July's climate average rather than June's.
Sunrise will be at 5:28 am and sunset at 8:35 pm; tomorrow's daylight will last for 15h and 7min.

Frequently asked questions

What is the weather forecast for Harrow for tomorrow?
Tomorrow, thunderstorms and rainy conditions are forecasted for the afternoon.
Will it rain tomorrow?
Light precipitation of 0.35" is predicted. The chance of rainfall is 57%.
What will be the highest temperature tomorrow?
Tomorrow, the highest temperature will be 89.6°F, while the lowest temperature will be 62.6°F. The maximum heat index, which measures the combined effect of heat and moisture, is estimated at 107.6°F.
The highest temperature will be notably higher than the average maximum of 77.5°F in June. The lowest temperature will be a few degrees higher than the average low of 58.5°F.
What time are sunrise and sunset tomorrow?
On Thursday, in Harrow, sunrise will be at 5:28 am and sunset at 8:35 pm (EDT).
How long will the day be tomorrow in Harrow?
Tomorrow in Harrow, the daylight will last for 15h and 7min.

Hourly weather forecast

12 am
  • 72°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Wind: 1mph SW
  • Pressure: 29.85"Hg
  • Humidity: 96%
  • Precip. probability: 9%
  • Precipitation: 0"
  • Visibility: 8mi
2 am
  • 72°F
  • Feels like:
    73°F
Partly Cloudy
Partly Cloudy
  • Wind: 2mph SW
  • Pressure: 29.85"Hg
  • Humidity: 97%
  • Precip. probability: 16%
  • Precipitation: 0"
  • Visibility: 7mi
4 am
  • 70°F
  • Feels like:
    73°F
Partly Cloudy
Partly Cloudy
  • Wind: 2mph SW
  • Pressure: 29.83"Hg
  • Humidity: 98%
  • Precip. probability: 10%
  • Precipitation: 0"
  • Visibility: 6mi
Sunrise: 5:28 am
6 am
  • 70°F
  • Feels like:
    73°F
Partly Cloudy
Partly Cloudy
  • Wind: 2mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 100%
  • Precip. probability: 10%
  • Precipitation: 0"
  • Visibility: 5mi
8 am
  • 75°F
  • Feels like:
    79°F
Partly Cloudy
Partly Cloudy
  • Wind: 3mph SW
  • Pressure: 29.83"Hg
  • Humidity: 91%
  • Precip. probability: 10%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 81°F
  • Feels like:
    86°F
Sunny
Sunny
  • Wind: 6mph SW
  • Pressure: 29.83"Hg
  • Humidity: 77%
  • Precip. probability: 10%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 86°F
  • Feels like:
    91°F
Mostly Sunny
Mostly Sunny
  • Wind: 8mph SW
  • Pressure: 29.8"Hg
  • Humidity: 65%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 88°F
  • Feels like:
    95°F
Showers
Showers
  • Wind: 10mph SW
  • Pressure: 29.74"Hg
  • Humidity: 59%
  • Precip. probability: 36%
  • Precipitation: 0.04"
  • Visibility: 7mi
4 pm
  • 84°F
  • Feels like:
    90°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 10mph SW
  • Pressure: 29.74"Hg
  • Humidity: 64%
  • Precip. probability: 58%
  • Precipitation: 0.2"
  • Visibility: 7mi
6 pm
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph SW
  • Pressure: 29.71"Hg
  • Humidity: 72%
  • Precip. probability: 20%
  • Precipitation: 0"
  • Visibility: 8mi
8 pm
  • 79°F
  • Feels like:
    82°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph SW
  • Pressure: 29.71"Hg
  • Humidity: 73%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 7mi
Sunset: 8:35 pm
10 pm
  • 73°F
  • Feels like:
    75°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 7mph WSW
  • Pressure: 29.74"Hg
  • Humidity: 83%
  • Precip. probability: 14%
  • Precipitation: 0"
  • Visibility: 8mi
Tomorrow, on Thursday, weather will be unstable, and a mix of cloudy, sun-filled, storm-filled and rainy weather is predicted.
Rainfall is anticipated from 2 pm to 4 pm and at 7 pm. With moderate precipitation of 0.2", most rainfall is expected at 4 pm.
The temperature will vary between a minimum of 69.8°F and a maximum of 87.8°F. The feels-like temperature will be between the lowest temperature of 73.4°F and the highest temperature of 95°F. The hottest part of the day will be at 2 pm and 3 pm.
The temperature will be more consistent with what’s typical for July than the usual maximum in June. The minimum temperature will be a few degrees higher than June's average low of 58.5°F.
Updated: Jun 18, 2025 @ 18:51:54 UTC
Published by: Weather U.S. | About Us
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