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
A change in temperatures is noted as August gives way to September, with average highs reducing from a warm 82.4°F (28°C) to a pleasant 70.9°F (21.6°C). During September, Tonasket detects a significant contrast from its daytime temperatures, with nights averaging at a frosty 47.3°F (8.5°C).Humidity
In Tonasket, Washington, the average relative humidity in September is 52%.Rainfall
In September, in Tonasket, the rain falls for 5.3 days. Throughout September, 0.51" (13mm) of precipitation is accumulated. In Tonasket, Washington, during the entire year, the rain falls for 90.2 days and collects up to 7.56" (192mm) of precipitation.Snowfall
May through October are months without snowfall in Tonasket.Daylight
The average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:16 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:37 pm PDT.
Sunshine
In September, the average sunshine is 10.8h.UV index
In September, the average daily maximum UV index in Tonasket, Washington, is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are the temperatures in Tonasket in September?
What is the average humidity in September in Tonasket?
How many days does it rain in September in Tonasket?
When it does not snow in Tonasket?
What is the average length of the day in September in Tonasket?
When is the sunrise / sunset in September in Tonasket?
How long on average sun shines in September in Tonasket?
What is the UV index intensity in September in Tonasket?
Average temperature in September
Tonasket, WA
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (30.4°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).
Average pressure in September
Tonasket, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed in September
Tonasket, WA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (5.1mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in September
Tonasket, WA
- Average humidity in September: 52%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are July and August (42%).
Average rainfall in September
Tonasket, WA
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is December (0.94").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in September
Tonasket, WA
- Average rainfall days in September: 5.3 days
The month with the highest number of rainy days is March (11.5 days).
The month with the least rainy days is August (2.8 days).
Average snowfall in September
Tonasket, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.39").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Tonasket, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (8.4 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
Tonasket, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 10h and 5min
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: 4h and 30min).
Average sunshine days in September
Tonasket, WA
- Average sunshine days in September: 23.4 days
The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is November (15.4 days).
Average UV index in September
Tonasket, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Tonasket, WA
- Average cloud cover in September: 18
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Tonasket, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Tonasket, Washington, USA
Weather forecast for your location
2. Allow the app to use your location
