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 onset of September entails a temperature shift, as the average high-temperature decreases from a moderately hot 83.1°F (28.4°C) in August to a pleasant 71.2°F (21.8°C). Methow registers a significant drop in temperature in September, with average nighttime lows of 49.5°F (9.7°C).Humidity
In Methow, the average relative humidity in September is 49%.Rainfall
In Methow, Washington, in September, during 6.2 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, there are 101.3 rainfall days, and 9.45" (240mm) of precipitation is accumulated.Snowfall
In Methow, snow does not fall in April through October.Daylight
In Methow, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:40 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:40 pm PDT.
Sunshine
In September, the average sunshine is 10.8h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Take necessary precautions - Defending against sun damage is advocated. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Methow?
What is the average humidity in September in Methow?
How many days does it rain in September in Methow?
When it does not snow in Methow?
What is the average length of the day in September in Methow?
When is the sunrise / sunset in September in Methow?
How many hours of sunshine does Methow have in September?
How high is the UV index in September in Methow?
Average temperature in September
Methow, WA
- Average high temperature in September: 71.2°F
The warmest months (with the highest average high temperature) are July and August (83.1°F).
The months with the lowest average high temperature are January and December (30.7°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is August (57°F).
The coldest month (with the lowest average low temperature) is December (18.9°F).
Average pressure in September
Methow, 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
Methow, WA
- Average wind speed in September: 4.8mph
The windiest months (with the highest average wind speed) are April, June and July (5.3mph).
The calmest month (with the lowest average wind speed) is January (3.5mph).
Average humidity in September
Methow, WA
- Average humidity in September: 49%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Methow, WA
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is December (1.34").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Methow, WA
- Average rainfall days in September: 6.2 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (2.8 days).
Average snowfall in September
Methow, WA
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.72").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Methow, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (9.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Methow, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
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 12min).
Average sunshine days in September
Methow, WA
- Average sunshine days in September: 22.5 days
The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is February (13.7 days).
Average UV index in September
Methow, 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 November (UV index 1).
Average cloud cover in September
Methow, WA
- Average cloud cover in September: 18
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Methow, 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).
Methow, Washington, USA
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