Grass Valley, United States Snapshot 2026

United States

Where is Grass Valley?

Grass Valley, United States

Continent
Americas
City
Grass Valley
Population
12.9K
Elevation
735 m
Coordinates
39.22°, -121.06°

Grass Valley is a city in United States with a population of approximately 12.9K. Average temperatures range from 3°C (37°F) in February to 33°C (92°F) in July. The best time to visit is June, July, August, September. The city sits at an elevation of 735 m above sea level.

Time in Grass Valley right now

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22:25 25
Monday, June 15, 2026
UTC Offset
UTC-07:00
IANA time zone
America/Los_Angeles
Daylight saving
DST in effect
PST / PDT
Next DST change
November 1
backward -1h

Live weather in Grass Valley

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Daylight in Grass Valley today

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Sunrise
Sunset
Day length
14h 55m

Climate normals for Grass Valley

Long-term monthly averages based on historical data.

January
Wet
Temp
11°C / 3°C
Feels Like
9°C / -1°C
Rain
13days (279 mm) Wet
Sun
6.2h Fair
Humidity
74% Muggy
UV
2.6 Moderate
Snow Days
8days
February
Wet
Temp
13°C / 3°C
Feels Like
10°C / -1°C
Rain
11days (251 mm) Wet
Sun
7.7h Good
Humidity
67% Muggy
UV
3.2 Moderate
Snow Days
8days
March
Wet
Temp
13°C / 3°C
Feels Like
11°C / 0°C
Rain
16days (293 mm) Wet
Sun
8.5h Good
Humidity
72% Muggy
UV
4.6 Moderate
Snow Days
10days
April
Fair
Temp
19°C / 6°C
Feels Like
17°C / 3°C
Rain
8days (107 mm) Wet
Sun
10.8h Excellent
Humidity
62% Muggy
UV
6.4 High
Snow Days
3days
May
Good
Temp
23°C / 10°C
Feels Like
22°C / 7°C
Rain
7days (63 mm) Good
Sun
12.5h Excellent
Humidity
52% Moderate
UV
7.7 Very High
Snow Days
1days
June best
Excellent
Temp
30°C / 14°C
Feels Like
29°C / 12°C
Rain
2days (11 mm) Excellent
Sun
13.6h Excellent
Humidity
38% Comfortable
UV
8.1 Very High
July best
Excellent
Temp
33°C / 17°C
Feels Like
32°C / 16°C
Rain
0days (0 mm) Excellent
Sun
13.6h Excellent
Humidity
32% Comfortable
UV
8.2 Very High
August best
Excellent
Temp
32°C / 17°C
Feels Like
31°C / 16°C
Rain
1days (5 mm) Excellent
Sun
12.6h Excellent
Humidity
36% Comfortable
UV
7.5 Very High
September best
Excellent
Temp
29°C / 15°C
Feels Like
27°C / 13°C
Rain
3days (24 mm) Excellent
Sun
11.2h Excellent
Humidity
41% Moderate
UV
6.2 High
October
Good
Temp
23°C / 10°C
Feels Like
20°C / 7°C
Rain
5days (84 mm) Good
Sun
9.4h Good
Humidity
48% Moderate
UV
4.7 Moderate
November
Fair
Temp
15°C / 5°C
Feels Like
13°C / 2°C
Rain
9days (168 mm) Wet
Sun
7.6h Good
Humidity
64% Muggy
UV
3 Moderate
Snow Days
2days
December
Wet
Temp
11°C / 3°C
Feels Like
9°C / -1°C
Rain
11days (279 mm) Wet
Sun
6.1h Fair
Humidity
74% Muggy
UV
2.2 Moderate
Snow Days
6days
Month Temp Feels Like Rain Sun Humidity UV Status Details
January 11°C / 3°C 9°C / -1°C 13days (279 mm) Wet 6.2h Fair 74% Muggy 2.6 Moderate Wet View Details
February 13°C / 3°C 10°C / -1°C 11days (251 mm) Wet 7.7h Good 67% Muggy 3.2 Moderate Wet View Details
March 13°C / 3°C 11°C / 0°C 16days (293 mm) Wet 8.5h Good 72% Muggy 4.6 Moderate Wet View Details
April 19°C / 6°C 17°C / 3°C 8days (107 mm) Wet 10.8h Excellent 62% Muggy 6.4 High Fair View Details
May 23°C / 10°C 22°C / 7°C 7days (63 mm) Good 12.5h Excellent 52% Moderate 7.7 Very High Good View Details
June best 30°C / 14°C 29°C / 12°C 2days (11 mm) Excellent 13.6h Excellent 38% Comfortable 8.1 Very High Excellent View Details
July best 33°C / 17°C 32°C / 16°C 0days (0 mm) Excellent 13.6h Excellent 32% Comfortable 8.2 Very High Excellent View Details
August best 32°C / 17°C 31°C / 16°C 1days (5 mm) Excellent 12.6h Excellent 36% Comfortable 7.5 Very High Excellent View Details
September best 29°C / 15°C 27°C / 13°C 3days (24 mm) Excellent 11.2h Excellent 41% Moderate 6.2 High Excellent View Details
October 23°C / 10°C 20°C / 7°C 5days (84 mm) Good 9.4h Good 48% Moderate 4.7 Moderate Good View Details
November 15°C / 5°C 13°C / 2°C 9days (168 mm) Wet 7.6h Good 64% Muggy 3 Moderate Fair View Details
December 11°C / 3°C 9°C / -1°C 11days (279 mm) Wet 6.1h Fair 74% Muggy 2.2 Moderate Wet View Details

Monthly Temperatures

42°C 36°C 30°C 24°C 18°C 12°C 6°C 0°C -6°C JanFebMarAprMayJunJulAugSepOctNovDec
HighLow

Line chart showing monthly temperatures. Jan: 11°C / 3°C . Feb: 13°C / 3°C . Mar: 13°C / 3°C . Apr: 19°C / 6°C . May: 23°C / 10°C . Jun: 30°C / 14°C . Jul: 33°C / 17°C . Aug: 32°C / 17°C . Sep: 29°C / 15°C . Oct: 23°C / 10°C . Nov: 15°C / 5°C . Dec: 11°C / 3°C .

Monthly Rainfall

0 mm 50 mm 100 mm 150 mm 200 mm 250 mm 300 mm JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall

Bar chart showing monthly rainfall. Jan: 279 mm. Feb: 251 mm. Mar: 293 mm. Apr: 107 mm. May: 63 mm. Jun: 11 mm. Jul: 0 mm. Aug: 5 mm. Sep: 24 mm. Oct: 84 mm. Nov: 168 mm. Dec: 279 mm.

Monthly Humidity

0% 25% 50% 75% 100% JanFebMarAprMayJunJulAugSepOctNovDec
Humidity

Line chart showing monthly humidity. Jan: 74%. Feb: 67%. Mar: 72%. Apr: 62%. May: 52%. Jun: 38%. Jul: 32%. Aug: 36%. Sep: 41%. Oct: 48%. Nov: 64%. Dec: 74%.

Monthly Wind Speed

0 15 30 45 60 JanFebMarAprMayJunJulAugSepOctNovDec
Wind SpeedGusts

Bar chart showing monthly wind speed. Jan: 16 km/h . Feb: 17 km/h . Mar: 15 km/h . Apr: 14 km/h . May: 14 km/h . Jun: 13 km/h . Jul: 13 km/h . Aug: 12 km/h . Sep: 13 km/h . Oct: 14 km/h . Nov: 14 km/h . Dec: 15 km/h .

UV Index

0 3 6 8 11 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index

Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 3. Mar: UV 5. Apr: UV 6. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 6. Oct: UV 5. Nov: UV 3. Dec: UV 2.

Frequently Asked Questions

Grass Valley has a population of approximately 12.9K.

The best months to visit Grass Valley are June, July, August, September, when temperatures are pleasant and rainfall is lower.

Grass Valley receives approximately 1564mm of rainfall annually across 86 rainy days.

Grass Valley is located in United States, in the Americas region.

Grass Valley sits at an elevation of 735 m (2,411 ft) above sea level.