September weather forecastCoolspring, PA

September

Weather in September

The first month of the autumn, September, is also an agreeable month in Coolspring, Pennsylvania, with an average temperature fluctuating between 72.1°F (22.3°C) and 52.2°F (11.2°C).

Temperature

Coolspring, Pennsylvania, observes a small decrease in the average high-temperature with the arrival of September, falling from August's warm 78.6°F (25.9°C) to a pleasant 72.1°F (22.3°C). An average minimum temperature of 52.2°F (11.2°C) marks the month of September.

Humidity

In September, the average relative humidity is 80%.

Rainfall

In Coolspring, during September, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Coolspring, during the entire year, the rain falls for 150.5 days and collects up to 22.05" (560mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:43 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:59 pm EDT.

Sunshine

The average sunshine in September is 8.3h.

UV index

In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 3 in September suggests the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in September, in Coolspring, is 72.1°F (22.3°C) and the average low-temperature is 52.2°F (11.2°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in July is appraised at 86°F (30°C).

The average relative humidity in September is 80%.

In September, the rain falls for 12.7 days. Throughout September, 1.73" (44mm) of precipitation is accumulated.

In Coolspring, snow does not fall in June through September.

In Coolspring, in September, it doesn't snow. In October, it regularly snows.

In September, the average day length in Coolspring is 12h and 28min.

In September, on the first day of the month, sunrise is at 6:43 am and sunset at 7:48 pm. On the last day of the month, in Coolspring, sunrise is at 7:12 am and sunset at 6:59 pm EDT.

In Coolspring, the average sunshine duration in September is 8.3h.

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

78.6°F

72.1°F

58.6°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.9mph

6.2mph

7.8mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

13.9

14.9

14.6

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Coolspring, PA

Average high temperature in September: 72.1°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (30.2°F).

Average low temperature in September: 52.2°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure in September
Coolspring, PA

Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Coolspring, PA

Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in September
Coolspring, PA

Average humidity in September: 80%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).

Average rainfall in September
Coolspring, PA

Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is November (1.26").

Average rainfall days in September
Coolspring, PA

Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.2 days).

Average snowfall in September
Coolspring, PA

Average snowfall in September: 0"

The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Coolspring, PA

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Coolspring, PA

Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

Average sunshine in September: 8h and 18min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).