September weather forecastSherwood, OR
September
Weather in September
September ushers in a pleasant transition in Sherwood's weather as summer folds into autumn. After these months of high temperatures, the daily highs in September become more compromised at 74.3°F (23.5°C). Occasional rain showers return and make up 1.57" (40mm) spread across 10.8 days, offering some respite from the recently dry summer. Despite the shift in weather, September's longer daytime hours and comfortable evenings remain conducive to outdoor sightings and leisure activities.Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from 82°F (27.8°C) in August to a still moderately hot 74.3°F (23.5°C). The nighttime temperature in Sherwood shows a significant divergence from the daytime highs, averaging at a cool 52°F (11.1°C) in September.Humidity
In Sherwood, the average relative humidity in September is 69%.Rainfall
In September, the rain falls for 10.8 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 170.9 rainfall days, and 30.67" (779mm) of precipitation is accumulated.Snowfall
In Sherwood, snow does not fall in April through October.Daylight
In Sherwood, the average length of the day in September is 12h and 31min.On the first day of September in Sherwood, sunrise is at 6:34 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:52 pm PDT.
Sunshine
In September, the average sunshine in Sherwood is 9.3h.UV index
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 average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sherwood, OR
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (44.1°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).
Average pressure in September
Sherwood, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Sherwood, OR
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
Sherwood, OR
- Average humidity in September: 69%
The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall in September
Sherwood, OR
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in September
Sherwood, OR
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.8 days).
Average snowfall in September
Sherwood, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Sherwood, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 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
Sherwood, OR
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in September
Sherwood, OR
- Average sunshine days in September: 18 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (8.6 days).
Average UV index in September
Sherwood, OR
- 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 2).
Average cloud cover in September
Sherwood, OR
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Sherwood, OR
- Average visibility in September: 6mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
