Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a warm 79.5°F (26.4°C) in August to a pleasant 72.3°F (22.4°C). In September, Lock Haven's temperature tends to fall to an average low of 51.1°F (10.6°C) during the night.Humidity
The average relative humidity in September is 80%.Rainfall
In Lock Haven, during September, the rain falls for 13 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Lock Haven, during the entire year, the rain falls for 174.7 days and collects up to 32.09" (815mm) 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 6:37 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:52 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Lock Haven in September?
What is the average humidity in September in Lock Haven?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Lock Haven have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Lock Haven, PA
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Lock Haven, PA
- Average pressure in September: 30.07"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Lock Haven, PA
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Lock Haven, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (77%).
Average rainfall in September
Lock Haven, PA
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in September
Lock Haven, PA
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in September
Lock Haven, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lock Haven, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lock Haven, PA
- Average daylight in September: 12h and 3min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Lock Haven, PA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Lock Haven, PA
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Lock Haven, PA
- Average cloud cover in September: 43
The months with the most cloud cover are January and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Lock Haven, PA
- Average visibility in September: 4mi
The months with the highest visibility are January, March, April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are February, September and December (4mi).
Lock Haven, Pennsylvania, USA
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