September weather forecastHumptulips, WA
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Humptulips, Washington, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 63.7°F (17.6°C).Temperature
As Humptulips steps into September, the average high-temperature is measured at a still comfortable 63.7°F (17.6°C), displaying minor differences from August's 65.8°F (18.8°C). In September, Humptulips experiences an average nighttime temperature of 52.7°F (11.5°C).Humidity
In September, the average relative humidity is 83%.Rainfall
In Humptulips, Washington, during September, the rain falls for 10.6 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, in Humptulips, there are 152.8 rainfall days, and 19.41" (493mm) of precipitation is accumulated.Snowfall
In Humptulips, snow does not fall in April through October and December.Daylight
In Humptulips, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 6:36 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:56 pm PDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. To protect against the Sun's most potent rays, avoid direct exposure around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Humptulips, WA
- Average high temperature in September: 63.7°F
The warmest month (with the highest average high temperature) is August (65.8°F).
The month with the lowest average high temperature is December (45.5°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (39.7°F).
Average pressure in September
Humptulips, WA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Humptulips, WA
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is September (7.1mph).
Average humidity in September
Humptulips, WA
- Average humidity in September: 83%
The month with the highest relative humidity is December (85%).
The months with the lowest relative humidity are April, May and June (81%).
Average rainfall in September
Humptulips, WA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Humptulips, WA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is December (18.5 days).
The month with the least rainy days is July (5.6 days).
Average snowfall in September
Humptulips, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Humptulips, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Humptulips, 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 36min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Humptulips, WA
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is December (10.7 days).
Average UV index in September
Humptulips, WA
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Humptulips, WA
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Humptulips, WA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
