September weather forecastConnell, WA
September
Weather in September
September, the first month of the autumn in Connell, is still a warm month, with an average temperature varying between 56.3°F (13.5°C) and 77.4°F (25.2°C).Temperature
As August shifts into September, a slight alteration in temperatures is observed, with average highs reducing from a hot 88.3°F (31.3°C) to a warm 77.4°F (25.2°C). In September, the average low-temperature in Connell records at a mild 56.3°F (13.5°C) during the nights.Humidity
In Connell, the average relative humidity in September is 43%.Rainfall
In Connell, in September, during 4.5 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Connell, during the entire year, the rain falls for 97 days and collects up to 7.36" (187mm) of precipitation.Snowfall
Months with snowfall are January through March, September, November and December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.2" (5mm) of snow. In Connell, during the entire year, snow falls for 14.2 days and aggregates up to 5.43" (138mm) of snow.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September, sunrise is at 6:16 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:36 pm PDT.
Sunshine
In Connell, the average sunshine in September is 10.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Connell, WA
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (26.2°F).
Average pressure in September
Connell, WA
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in September
Connell, WA
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in September
Connell, WA
- Average humidity in September: 43%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in September
Connell, WA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is January (0.94").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in September
Connell, WA
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Connell, WA
- Average snowfall in September: 0.2"
The month with the highest snowfall is February (1.97").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in September
Connell, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (4.1 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Connell, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 10h and 36min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Connell, WA
- Average sunshine days in September: 24.1 days
The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is February (14.8 days).
Average UV index in September
Connell, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Connell, WA
- Average cloud cover in September: 17
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in September
Connell, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
