September weather forecastOld Station, CA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Old Station, California, with an average temperature varying between 73.6°F (23.1°C) and 44.8°F (7.1°C).Temperature
With September's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 80.4°F (26.9°C) in August to a still warm 73.6°F (23.1°C). Old Station anticipates a pronounced temperature drop from daily highs during the nights of September, with an average low of 44.8°F (7.1°C).Humidity
In Old Station, the average relative humidity in September is 47%.Rainfall
In September, the rain falls for 4.1 days. Throughout September, 0.51" (13mm) of precipitation is accumulated. Throughout the year, in Old Station, California, there are 83.9 rainfall days, and 26.61" (676mm) of precipitation is accumulated.Snowfall
Months with snowfall in Old Station, California, are January through June, September through December. September is the first month it typically snows in Old Station. Throughout September, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow. Throughout the year, in Old Station, California, there are 62.6 snowfall days, and 99.53" (2528mm) of snow is accumulated.Daylight
In September, the average length of the day in Old Station is 12h and 27min.On the first day of September in Old Station, sunrise is at 6:33 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:48 pm PDT.
Sunshine
The average sunshine in September is 11.1h.UV index
In Old Station, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. Boost your sun resistance with garments that are densely woven yet spacious. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Old Station, CA
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (39.4°F).
- Average low temperature in September: 44.8°F
The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in September
Old Station, CA
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in September
Old Station, CA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Old Station, CA
- Average humidity in September: 47%
The month with the highest relative humidity is March (83%).
The months with the lowest relative humidity are July and August (42%).
Average rainfall in September
Old Station, CA
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is March (4.76").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in September
Old Station, CA
- Average rainfall days in September: 4.1 days
The month with the highest number of rainy days is April (11.2 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in September
Old Station, CA
- Average snowfall in September: 0.24"
The months with the highest snowfall are February and March (21.85").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Old Station, CA
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is March (13.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Old Station, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 11h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Old Station, CA
- Average sunshine days in September: 24.8 days
The month with the most sunshine days is August (26.6 days).
The month with the least sunshine days is March (12.1 days).
Average UV index in September
Old Station, CA
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and November (UV index 1).
Average cloud cover in September
Old Station, CA
- Average cloud cover in September: 12
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in September
Old Station, CA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
