Current Conditions

Clear

77 °F

Clear
7 mph SW
64 °F
30.03 in
65%
10.0 miles

 

Forecast for Norristown, US

Excessive heat warning in effect from noon Monday to 7 PM EDT Tuesday...
Monday
chancetstorms
Chance of T-storms
H 86° / L 70°
Tuesday
tstorms
T-storms
H 84° / L 66°
Wednesday
chancetstorms
Chance of T-storms
H 82° / L 54°
Thursday
partlycloudy
Partly Cloudy
H 77° / L 48°
Friday
chancerain
Chance of Rain
H 77° / L 61°
Monday

Mostly cloudy in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 86F with a heat index of 93F. Winds from the SW at 5 to 10 mph. Chance of rain 20%.

Monday Night

Partly cloudy in the evening, then mostly cloudy. Low of 70F. Winds from the SW at 5 to 10 mph.

Tuesday

Overcast in the morning, then mostly cloudy with thunderstorms. High of 84F with a heat index of 90F. Winds from the SW at 5 to 15 mph. Chance of rain 70%.

Tuesday Night

Mostly cloudy with thunderstorms and rain showers, then thunderstorms after midnight. Low of 66F. Winds from the SW at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

Wednesday

Overcast with a chance of a thunderstorm and a chance of rain in the morning, then mostly cloudy. High of 82F. Winds from the West at 5 to 15 mph. Chance of rain 30%.

Wednesday Night

Partly cloudy. Low of 54F. Winds from the WSW at 10 to 15 mph shifting to the NW after midnight.

Thursday

Overcast in the morning, then partly cloudy. High of 77F. Winds from the NW at 10 to 15 mph.

Thursday Night

Partly cloudy in the evening, then clear. Low of 48F. Winds from the North at 5 to 10 mph.

Friday

Mostly cloudy in the morning, then overcast with a chance of rain. High of 77F. Winds from the ESE at 5 to 10 mph. Chance of rain 40%.

Friday Night

Mostly cloudy with a chance of a thunderstorm. Low of 61F. Winds from the SSE at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.7 in. possible.

 

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History & Almanac

 
Normal (KPHL) 77 °F 58 °F
Record (KPHL) 95 °F (1991) 42 °F (1961)
Yesterday 86 °F 67 °F
Yesterday's Cooling Degree Days: 12
Detailed History and Climate
May Calendar View (KPHL)
Yesterday's Official Weather and Almanac
Seasonal Weather Averages

 

Astronomy

Sunrise: 05:36 AM (EDT) Moon Rise: 11:39 AM (EDT) 5 / 27
Sunset: 08:21 PM (EDT) Moon Set: 12:26 AM (EDT) 5 / 27
Moon Phase
May. 27 May. 28 Jun. 04 Jun. 11 Jun. 19