September weather forecastSpringfield, OR
September
Weather in September
September, marking the onset of fall, brings cooler temperatures and an increased rainfall of 0.51" (13mm) in Springfield. Although higher than other summer months, the rainfall doesn't deter outdoor pursuits. Sunshine hours bud to 9.2 hours/day, trumping many other areas during this transition season.Temperature
The transition into September subtly indicates a reduction in the average high-temperature, down to a still warm 73.9°F (23.3°C) from August's 81.3°F (27.4°C). September presents a pronounced divergence from daily peak temperatures, with the average low-temperature of 47.3°F (8.5°C).Humidity
In September, the average relative humidity is 73%.Rainfall
In Springfield, in September, it is raining for 5.2 days, with typically 0.51" (13mm) of accumulated precipitation. In Springfield, during the entire year, the rain falls for 109.9 days and collects up to 10.08" (256mm) of precipitation.Snowfall
In Springfield, snow does not fall in April through November.Daylight
In Springfield, Oregon, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:36 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:53 pm PDT.
Sunshine
In Springfield, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Springfield, OR
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (46.2°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure in September
Springfield, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Springfield, OR
- Average wind speed in September: 3.6mph
The windiest months (with the highest average wind speed) are January and March (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.6mph).
Average humidity in September
Springfield, OR
- Average humidity in September: 73%
The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Springfield, OR
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Springfield, OR
- Average rainfall days in September: 5.2 days
The month with the highest number of rainy days is December (13.4 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in September
Springfield, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Springfield, 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 May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Springfield, OR
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 12min
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
Springfield, OR
- Average sunshine days in September: 24.1 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is February (14.3 days).
Average UV index in September
Springfield, 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
Springfield, OR
- Average cloud cover in September: 33
The months with the most cloud cover are February and March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Springfield, OR
- Average visibility in September: 5mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
