As of 23:43 PDT

Weather in Grass Valley, CA

47°

Grass Valley, Monday, 26 October, 23:43

Clear. Feels like 45°. High 63°, low 45°.

Pressure30.06 inHg

Wind5.3 mph E

Humidity72%

Visibility6.2 mi

Dew point39°

See detailed hourly forecast

Monthly outlook for Grass Valley, CA: average high 64.8°, average low 46.1°. That is 1° above the climate normal for October. Precipitation is expected on 4 days (about 3.1 inches), against a normal of 4 days and 2.3 inches. The warmest day looks like 10 November (71.4°), the coolest 1 November (39.8°).

64.8°/46.1°

Average high / low

+1°

Above normal

4 / 4

Wet days / normal

3.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
26 October – 4 November	66.2°	64.6°	+0.9°
5 November – 14 November	62.4°	59.6°	+1.6°
15 November – 24 November	at normal	56.1°	—

October records over 66 years

100°1 October 2024All-time high

30.9°29 October 1971All-time low

Climate normals and records are computed from the nearest reference point — Alta Sierra (7 mi).

Tue, 2761° / 40°

61 °

Grass Valley, Tuesday, 27 October

Clear. High 61°, low 40°.

Pressure30.03 inHg

Wind6.3 mph SW

Humidity48%

Visibility6.2 mi

Dew point41°

Wed, 2866° / 41°

66 °

Grass Valley, Wednesday, 28 October

Clear. High 66°, low 41°.

Pressure30.00 inHg

Wind4.5 mph SW

Humidity29%

Visibility6.2 mi

Dew point32°

Thu, 2964° / 44°

64 °

Grass Valley, Thursday, 29 October

Overcast. High 64°, low 44°.

Pressure29.91 inHg

Wind3.4 mph S

Humidity30%

Visibility6.2 mi

Dew point30°

Fri, 3065° / 46°

65 °

Grass Valley, Friday, 30 October

Clear. High 65°, low 46°.

Pressure29.88 inHg

Wind5.9 mph SW

Humidity32%

Visibility6.2 mi

Dew point33°

Sat, 3162° / 42°

62 °

Grass Valley, Saturday, 31 October

Overcast. High 62°, low 42°.

Pressure29.94 inHg

Wind7.2 mph SW

Humidity38%

Visibility—

Dew point32°

Sun, 0167° / 40°

67 °

Grass Valley, Sunday, 1 November

Clear. High 67°, low 40°.

Pressure30.03 inHg

Wind6.5 mph NE

Humidity22%

Visibility—

Dew point21°

Mon, 0270° / 43°

70 °

Grass Valley, Monday, 2 November

Clear. High 70°, low 43°.

Pressure30.18 inHg

Wind8.5 mph W

Humidity11%

Visibility—

Dew point6°

Tue, 0371° / 46°

71 °

Grass Valley, Tuesday, 3 November

Overcast. High 71°, low 46°.

Pressure30.18 inHg

Wind6.1 mph E

Humidity13%

Visibility—

Dew point11°

Wed, 0471° / 51°

71 °

Grass Valley, Wednesday, 4 November

Overcast. High 71°, low 51°.

Pressure30.06 inHg

Wind6 mph E

Humidity14%

Visibility—

Dew point16°

Thu, 0556° / 47°

0.13

56 °

Grass Valley, Thursday, 5 November

Light rain. High 56°, low 47°.

Pressure30.06 inHg

Wind5 mph E

Humidity88%

Visibility—

Dew point46°

Fri, 0667° / 53°

0.33

67 °

Grass Valley, Friday, 6 November

Rain. High 67°, low 53°.

Pressure29.91 inHg

Wind17.9 mph S

Humidity60%

Visibility—

Dew point48°

Sat, 0754° / 50°

2.54

54 °

Grass Valley, Saturday, 7 November

Heavy rain. High 54°, low 50°.

Pressure29.85 inHg

Wind17.5 mph S

Humidity98%

Visibility—

Dew point53°

Sun, 0859° / 47°

0.08

59 °

Grass Valley, Sunday, 8 November

Light rain. High 59°, low 47°.

Pressure30.09 inHg

Wind4.7 mph E

Humidity76%

Visibility—

Dew point47°

Mon, 0967° / 48°

67 °

Grass Valley, Monday, 9 November

Mostly clear. High 67°, low 48°.

Pressure30.15 inHg

Wind5.5 mph NE

Humidity36%

Visibility—

Dew point34°

Tue, 1071° / 54°

71 °

Grass Valley, Tuesday, 10 November

Clear. High 71°, low 54°.

Pressure30.12 inHg

Wind5.2 mph E

Humidity43%

Visibility—

Dew point43°

From day 17 onward the outlook is built from 60-year climate statistics

Wed, 1159° / 42°

0.21

59 °

Grass Valley, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high59°

Average low42°

Average precipitation0.21 in

Chance of precipitation28%

Record high74° (2025)

Record low27° (1982)

Thu, 1259° / 41°

0.17

59 °

Grass Valley, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high59°

Average low41°

Average precipitation0.17 in

Chance of precipitation32%

Record high74° (2019)

Record low23° (1985)

Fri, 1358° / 41°

0.26

58 °

Grass Valley, Friday, 13 November

Climate normal for this date — 60-year average.

Average high58°

Average low41°

Average precipitation0.26 in

Chance of precipitation32%

Record high73° (2021)

Record low12° (1985)

Sat, 1459° / 42°

0.17

59 °

Grass Valley, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high59°

Average low42°

Average precipitation0.17 in

Chance of precipitation33%

Record high75° (2008)

Record low21° (1985)

Sun, 1558° / 41°

0.13

58 °

Grass Valley, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high58°

Average low41°

Average precipitation0.13 in

Chance of precipitation27%

Record high73° (2008)

Record low24° (1985)

Mon, 1657° / 42°

0.23

57 °

Grass Valley, Monday, 16 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.23 in

Chance of precipitation33%

Record high71° (2008)

Record low28° (2000)

Tue, 1757° / 41°

0.28

57 °

Grass Valley, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high57°

Average low41°

Average precipitation0.28 in

Chance of precipitation37%

Record high73° (2019)

Record low30° (1964)

Wed, 1857° / 40°

0.23

57 °

Grass Valley, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high57°

Average low40°

Average precipitation0.23 in

Chance of precipitation33%

Record high75° (2019)

Record low27° (1985)

Thu, 1956° / 40°

0.18

56 °

Grass Valley, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high56°

Average low40°

Average precipitation0.18 in

Chance of precipitation37%

Record high70° (2018)

Record low26° (1985)

Fri, 2055° / 40°

0.24

55 °

Grass Valley, Friday, 20 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.24 in

Chance of precipitation37%

Record high72° (1995)

Record low27° (1985)

Sat, 2155° / 40°

0.29

55 °

Grass Valley, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.29 in

Chance of precipitation33%

Record high74° (2017)

Record low26° (1961)

Sun, 2255° / 39°

0.24

55 °

Grass Valley, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high55°

Average low39°

Average precipitation0.24 in

Chance of precipitation33%

Record high77° (2017)

Record low28° (1985)

Mon, 2356° / 39°

0.23

56 °

Grass Valley, Monday, 23 November

Climate normal for this date — 60-year average.

Average high56°

Average low39°

Average precipitation0.23 in

Chance of precipitation25%

Record high71° (1995)

Record low28° (1973)

Tue, 2455° / 38°

0.22

55 °

Grass Valley, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high55°

Average low38°

Average precipitation0.22 in

Chance of precipitation32%

Record high72° (1995)

Record low21° (2010)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Grass Valley, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Grass Valley, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.