Climate of Norristown

Norristown has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Norristown is 16° degrees and there is about 294 mm of rain in a year. It is dry for 203 days a year with an average humidity of 77% and an UV-index of 4.

Climate averages for the whole year

Day: the average daily temperature during the day is between 2°C and 29°C
Night:the average nighttime temperature is between -5°C and 19°C
Rain: it rains 127 days and there is a total of approximately 294 mm rainfall
Snow: it snows an average of 16 days per year
Sun hours: throughout the year there are 2746 sun hours

Maximum temperature:	between 2°C and 29°C
Warmest month:	29°C in July
Coldest month:	2°C in January
Night temperature:	between -5°C and 19°C
Dry days:	222 days
Days with rain:	127 days
Days with snow:	16 days
Total rain sum:	294 mm
Hours of sunshine:	2746 hours

Climate of Norristown
Temperature graph
Precipitation graph
Climate chart of Norristown
The best travel time for Norristown
Climate of Norristown by month
Experiences with the weather of Norristown

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Norristown.

Precipitation graph

This graph shows the average amount of rainfall per month for Norristown.

Climate table of Norristown

In this climate table you can see at a glance what the average weather per month is for Norristown. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Norristown might be like in a given month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day temp. (°C)	2	4	9	16	22	26	29	28	24	18	11	6
Night temp. (°C)	-5	-4	1	6	12	16	19	18	15	9	3	-1
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Precipitation (mm)	23	19	23	20	31	26	30	30	25	20	26	21
Days with rain	7	8	11	12	15	13	14	12	10	10	7	8
Days with snow	5	5	3	-	-	-	-	-	-	-	1	2
Dry days	19	15	17	18	16	17	17	19	20	21	22	21
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sun hours per day	5	5	7	9	9	10	11	11	9	6	5	5
Wind force (Bft)	3	3	3	3	2	2	2	2	2	2	2	3
UV-index	2	2	2	4	6	6	6	6	5	3	2	2

Best time to visit Norristown

The best time to visit Norristown in the state of Pennsylvania is from May through October. In this period you have a warm temperature and almost no precipitation. The highest average temperature in Norristown is 29°C in July and the lowest is 2°C in January.

Climate of Norristown by month

What is the average climate in a given month for Norristown? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

January