September weather forecastLatah, WA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Latah, Washington, with an average temperature ranging between max 72.5°F (22.5°C) and min 52.2°F (11.2°C).Temperature
The transition into September is accompanied by a temperature decrease, with the average high-temperature shifting from a warm 83.5°F (28.6°C) in August to an agreeable 72.5°F (22.5°C). Latah's average low-temperature for the month of September records at a cool 52.2°F (11.2°C).Humidity
In September, the average relative humidity is 46%.Rainfall
In Latah, in September, it is raining for 6.5 days, with typically 0.59" (15mm) of accumulated precipitation. In Latah, during the entire year, the rain falls for 114.1 days and collects up to 14.88" (378mm) of precipitation.Snowfall
Months with snowfall in Latah are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.16" (4mm) of snow. In Latah, during the entire year, snow falls for 53 days and aggregates up to 29.69" (754mm) of snow.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September, sunrise is at 6:08 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:29 pm PDT.
Sunshine
In September, the average sunshine is 10.2h.UV index
In Latah, Washington, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Latah, WA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (32.7°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in September
Latah, WA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in September
Latah, WA
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Latah, WA
- Average humidity in September: 46%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (37%).
Average rainfall in September
Latah, WA
- Average rainfall in September: 0.59"
The wettest months (with the highest rainfall) are January, March and December (1.85").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Latah, WA
- Average rainfall days in September: 6.5 days
The months with the highest number of rainy days are March and April (14.1 days).
The month with the least rainy days is July (4.5 days).
Average snowfall in September
Latah, WA
- Average snowfall in September: 0.16"
The month with the highest snowfall is January (8.27").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Latah, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Latah, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 10h and 12min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in September
Latah, WA
- Average sunshine days in September: 21.9 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (11.7 days).
Average UV index in September
Latah, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Latah, WA
- Average cloud cover in September: 20
The months with the most cloud cover are January and December (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in September
Latah, WA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
