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
With the arrival of September, Harrisville experiences a modest decline in average high-temperatures, transitioning from 83.8°F (28.8°C) in August to a still warm 77.4°F (25.2°C). Throughout the month of September, Harrisville sees a steady low-temperature average of 56.3°F (13.5°C).Humidity
In Harrisville, the average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 14.6 days and accumulates 2.13" (54mm) of precipitation.Snowfall
In Harrisville, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:54 pm. On the last day of September, in Harrisville, sunrise is at 7:19 am and sunset at 7:07 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What are September temperatures in Harrisville?
What is the average humidity in September in Harrisville?
What is the driest month in Harrisville?
How many days does it rain in September in Harrisville?
When it does not snow in Harrisville?
Does it snow in Harrisville in September?
What is the average length of the day in September in Harrisville?
When are sunrise and sunset in September in Harrisville?
How many hours of sunshine does Harrisville have in September?
How high is the UV index in September in Harrisville?
Average temperature in September
Harrisville, WV
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Harrisville, WV
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Harrisville, WV
- Average wind speed in September: 4.4mph
The windiest months (with the highest average wind speed) are January and February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Harrisville, WV
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July, August and November (77%).
Average rainfall in September
Harrisville, WV
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in September
Harrisville, WV
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is November (12.2 days).
Average snowfall in September
Harrisville, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.87").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Harrisville, WV
- 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 May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harrisville, WV
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Harrisville, WV
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is February (8.2 days).
Average UV index in September
Harrisville, WV
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Harrisville, WV
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Harrisville, WV
- Average visibility in September: 5mi
The month with the highest visibility is November (6mi).
The month with the lowest visibility is January (4mi).
Harrisville, West Virginia, USA
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