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 transition into September is accompanied by a temperature decrease, with the average high-temperature shifting from a moderately hot 82.8°F (28.2°C) in August to an agreeable 70.7°F (21.5°C). The average low-temperature of 44.6°F (7°C) in September represents a significant drop from the daily high.Humidity
In September, the average relative humidity is 56%.Rainfall
In Gifford, in September, it is raining for 4.9 days, with typically 0.55" (14mm) of accumulated precipitation. Throughout the year, there are 86.5 rainfall days, and 6.42" (163mm) of precipitation is accumulated.Snowfall
Months with snowfall in Gifford are January through April, September, November and December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.51" (13mm) of snow. In Gifford, during the entire year, snow falls for 24.6 days and aggregates up to 6.38" (162mm) of snow.Daylight
In September, the average length of the day is 12h and 34min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:33 pm. On the last day of September, in Gifford, sunrise is at 6:51 am and sunset at 6:32 pm PDT.
Sunshine
In September, the average sunshine in Gifford is 10.4h.UV index
In September, the average daily maximum UV index in Gifford is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What is the usual temperature for Gifford in September?
What is the average humidity in September in Gifford?
How much does it rain in Gifford in September?
When does it start to snow in Gifford?
What is the average length of the day in September in Gifford?
When are sunrise and sunset in September in Gifford?
How many hours of sunshine does Gifford have in September?
What is the UV index intensity in September in Gifford?
Average temperature in September
Gifford, WA
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is August (82.8°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in September: 44.6°F
The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (18.3°F).
Average pressure in September
Gifford, WA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in September
Gifford, WA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are January and December (3.4mph).
Average humidity in September
Gifford, WA
- Average humidity in September: 56%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Gifford, WA
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is May (1.06").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in September
Gifford, WA
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is September (4.9 days).
Average snowfall in September
Gifford, WA
- Average snowfall in September: 0.51"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in September
Gifford, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Gifford, 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 2min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Gifford, WA
- Average sunshine days in September: 23.8 days
The month with the most sunshine days is September (23.8 days).
The month with the least sunshine days is June (17.3 days).
Average UV index in September
Gifford, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Gifford, WA
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Gifford, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (2mi).
Gifford, Washington, USA
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