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United States weather

Weather in Nevada County, California for September 2026

Your guide to Nevada County weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Nevada County during September is quite rare, with fewer than 2 snowy days on average.
    According to Nevada County snow forecast for September 2026, 1 snowy day is expected until the end of the month at Tuesday, September 29.

    • Temperatures

  • Until now, September 2026 in Nevada County is slightly cooler than the historical average by 0.9 °F.

  • Expect cooler weather in the next days in Nevada County with the forecast suggesting a temperature of 19.4 °F, lower than the historical average.

  • In general, the average temperature in Nevada County at the beginning of September is 19.1 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 18.4 °F by the end of September.

    • Rain 🌧️

  • With an average of 4 rainy days, Nevada County experiences minimal rainfall in September.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/10°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
49 %
Avg humidity

Nevada County Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Partly cloudy
22°
2
Thundery outbreaks possible
18°
3
Partly cloudy
19°
4
Partly cloudy
17°
5
Sunny
20°
6
Sunny
19°
7
Partly cloudy
19°
8
Sunny
21°
9
Sunny
21°
10
Overcast
20°
11
Sunny
19°
12
Sunny
20°
13
Sunny
20°
14
Sunny
22°
15
Sunny
21°
16
Sunny
18°
17
Overcast
17°
18
Moderate or heavy rain shower
17°
19
Patchy rain possible
18°
20
Overcast
23°
21
Overcast
24°
22
Sunny
24°
23
Overcast
23°
24
Sunny
23°
25
Overcast
20°
26
Sunny
19°
27
Sunny
21°
28
Sunny
22°
29
Sunny
14°
30
Sunny
10°

Temperatures trend during September in Nevada County

See the weather trend as well as the moving average line

September weather in Nevada County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
Sept. 1 Partly cloudy
Partly cloudy
 22° /9° 0 mm 0 cm
Sept. 2 Thundery outbreaks possible
Thundery outbreaks possible
 18° /8° 0 mm 0 cm
Sept. 3 Partly cloudy
Partly cloudy
 19° /8° 0.8 mm 0 cm
Sept. 4 Partly cloudy
Partly cloudy
 17° /9° 1.2 mm 0 cm
Sept. 5 Sunny
Sunny
 20° /8° 0 mm 0 cm
Sept. 6 Sunny
Sunny
 19° /7° 0 mm 0 cm
Sept. 7 Partly cloudy
Partly cloudy
 19° /5° 0 mm 0 cm
Sept. 8 Sunny
Sunny
 21° /7° 0 mm 0 cm
Sept. 9 Sunny
Sunny
 21° /7° 0 mm 0 cm
Sept. 10 Overcast
Overcast
 20° /8° 0.1 mm 0 cm
Sept. 11 Sunny
Sunny
 19° /6° 0 mm 0 cm
Sept. 12 Sunny
Sunny
 20° /6° 0 mm 0 cm
Sept. 13 Sunny
Sunny
 20° /6° 0 mm 0 cm
Sept. 14 Sunny
Sunny
 22° /6° 0 mm 0 cm
Sept. 15 Sunny
Sunny
 21° /6° 0 mm 0 cm
Sept. 16 Sunny
Sunny
 18° /6° 0.7 mm 0 cm
Sept. 17 Overcast
Overcast
 17° /6° 0 mm 0 cm
Sept. 18 Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /7° 9.4 mm 0 cm
Sept. 19 Patchy rain possible
Patchy rain possible
 18° /6° 6.6 mm 0 cm
Sept. 20 Overcast
Overcast
 23° /6° 0 mm 0 cm
Sept. 21 Overcast
Overcast
 24° /7° 0 mm 0 cm
Sept. 22 Sunny
Sunny
 24° /7° 0 mm 0 cm
Sept. 23 Overcast
Overcast
 23° /8° 0 mm 0 cm
Sept. 24 Sunny
Sunny
 23° /9° 0 mm 0 cm
Sept. 25 Overcast
Overcast
 20° /6° 0 mm 0 cm
Sept. 26 Sunny
Sunny
 19° /5° 0 mm 0 cm
Sept. 27 Sunny
Sunny
 21° /4° 0 mm 0 cm
Sept. 28 Sunny
Sunny
 22° /5° 0 mm 0 cm
Sept. 29 Sunny
Sunny
 14° /-4° 0 mm 0 cm
Sept. 30 Sunny
Sunny
 10° /-5° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Nevada County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Nevada County forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Nevada County in September - FAQ

What are the expected maximum and minimum temperatures in Nevada County during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Nevada County during September?
In September, Nevada County can expect light to moderate rainfall, totaling 26.9 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in Nevada County during September?
The average wind speed in Nevada County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

Nevada County snow forecast September 2026

Track daily snowfall levels and discover Nevada County’s snowy potential this September ❄️

September rainfall patterns in Nevada County

Explore the daily rainfall trends and prepare for Nevada Countys September weather 💧
Typically, Nevada County has 4 rainy days in September with a total of 26.9 mm of rainfall.

UV exposure in Nevada County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Nevada County?

Get accurate weather forecasts for Nevada County, located at latitude 39.328 and longitude -120.183. Stay updated with localized weather information tailored for Nevada County.

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