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
September is characterized by a mild reduction in the average high-temperature, from a moderately hot 81.9°F (27.7°C) in August to a still warm 74.3°F (23.5°C). Cromberg documents a substantial deviation from daytime highs with a consistent low-temperature of 43.3°F (6.3°C) during September nights.Humidity
In September, the average relative humidity is 45%.Rainfall
In September, the rain falls for 3.9 days. Throughout September, 0.35" (9mm) of precipitation is accumulated. Throughout the year, there are 64.7 rainfall days, and 20.51" (521mm) of precipitation is accumulated.Snowfall
Months with snowfall in Cromberg are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.6 snowfall days, it receives 1.06" (27mm) of snow. In Cromberg, during the entire year, snow falls for 82.6 days and aggregates up to 115.39" (2931mm) of snow.Daylight
In Cromberg, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:46 pm PDT.
Sunshine
The average sunshine in September is 11.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September in Cromberg?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Cromberg have in September?
What is the UV index reading in September?
Average temperature in September
Cromberg, CA
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in September: 43.3°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in September
Cromberg, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Cromberg, CA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Cromberg, CA
- Average humidity in September: 45%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (39%).
Average rainfall in September
Cromberg, CA
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is March (3.62").
The driest months (with the least rainfall) are July and August (0.16").
Average rainfall days in September
Cromberg, CA
- Average rainfall days in September: 3.9 days
The month with the highest number of rainy days is May (9.9 days).
The month with the least rainy days is July (2.5 days).
Average snowfall in September
Cromberg, CA
- Average snowfall in September: 1.06"
The month with the highest snowfall is March (24.61").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Cromberg, CA
- Average snowfall days in September: 0.6 days
The month with the highest number of snowfall days is March (15.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Cromberg, CA
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Cromberg, CA
- Average sunshine days in September: 25.3 days
The month with the most sunshine days is August (26.9 days).
The month with the least sunshine days is March (12.3 days).
Average UV index in September
Cromberg, CA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Cromberg, CA
- Average cloud cover in September: 12
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in September
Cromberg, CA
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Cromberg, California, USA
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