Monthly outlook for Grass Valley, OR: average high 51.4°, average low 38.4°. That is 0.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.3 inches), against a normal of 6 days and 1.1 inches. The warmest day looks like 10 November (61.9°), the coolest 30 October (32.6°).
51.4°/38.4°
Average high / low
+0.9°
Above normal
4 / 6
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
51.1°
51°
+0.1°
8 November – 17 November
51.9°
47.4°
+2.5°
18 November – 27 November
at normal
42.7°
—
October records over 66 years
88°2 October 1975All-time high
17.4°30 October 2019All-time low
Fri, 3048° / 33°0
48 °
Grass Valley, Friday, 30 October
Overcast. High 48°, low 33°.
Pressure29.91 inHg
Wind4.2 mph SW
Humidity63%
Visibility6.2 mi
Dew point37°
Sat, 3149° / 35°0
49 °
Grass Valley, Saturday, 31 October
Overcast. High 49°, low 35°.
Pressure30.06 inHg
Wind3.4 mph NE
Humidity67%
Visibility6.2 mi
Dew point37°
Sun, 0152° / 37°0.04
52 °
Grass Valley, Sunday, 1 November
Light rain. High 52°, low 37°.
Pressure30.06 inHg
Wind3.7 mph W
Humidity65%
Visibility6.2 mi
Dew point38°
Mon, 0255° / 35°0
55 °
Grass Valley, Monday, 2 November
Partly cloudy. High 55°, low 35°.
Pressure30.33 inHg
Wind6.5 mph E
Humidity72%
Visibility—
Dew point39°
Tue, 0356° / 41°0
56 °
Grass Valley, Tuesday, 3 November
Mostly clear. High 56°, low 41°.
Pressure30.30 inHg
Wind5.3 mph E
Humidity65%
Visibility—
Dew point38°
Wed, 0451° / 40°0
51 °
Grass Valley, Wednesday, 4 November
Overcast. High 51°, low 40°.
Pressure30.03 inHg
Wind10.5 mph E
Humidity60%
Visibility—
Dew point33°
Thu, 0554° / 41°0
54 °
Grass Valley, Thursday, 5 November
Overcast. High 54°, low 41°.
Pressure29.97 inHg
Wind13.4 mph W
Humidity50%
Visibility—
Dew point31°
Fri, 0654° / 38°0
54 °
Grass Valley, Friday, 6 November
Overcast. High 54°, low 38°.
Pressure30.06 inHg
Wind9.3 mph W
Humidity52%
Visibility—
Dew point30°
Sat, 0746° / 40°0.07
46 °
Grass Valley, Saturday, 7 November
Light rain. High 46°, low 40°.
Pressure30.09 inHg
Wind5.2 mph NE
Humidity66%
Visibility—
Dew point34°
Sun, 0850° / 43°0.06
50 °
Grass Valley, Sunday, 8 November
Light rain. High 50°, low 43°.
Pressure30.06 inHg
Wind8.1 mph SW
Humidity89%
Visibility—
Dew point43°
Mon, 0954° / 43°0
54 °
Grass Valley, Monday, 9 November
Overcast. High 54°, low 43°.
Pressure30.21 inHg
Wind8.9 mph S
Humidity68%
Visibility—
Dew point38°
Tue, 1062° / 42°0.01
62 °
Grass Valley, Tuesday, 10 November
Light rain. High 62°, low 42°.
Pressure29.56 inHg
Wind20.2 mph S
Humidity56%
Visibility—
Dew point34°
Wed, 1149° / 39°0.01
49 °
Grass Valley, Wednesday, 11 November
Light rain. High 49°, low 39°.
Pressure29.29 inHg
Wind16.2 mph W
Humidity63%
Visibility—
Dew point36°
Thu, 1248° / 36°0.07
48 °
Grass Valley, Thursday, 12 November
Light rain. High 48°, low 36°.
Pressure29.47 inHg
Wind18 mph SW
Humidity63%
Visibility—
Dew point31°
Fri, 1348° / 38°0
48 °
Grass Valley, Friday, 13 November
Overcast. High 48°, low 38°.
Pressure29.80 inHg
Wind22.4 mph SW
Humidity56%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1446° / 35°0.04
46 °
Grass Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.04 in
Chance of precipitation33%
Record high62° (2001)
Record low6° (2014)
Sun, 1547° / 34°0.06
47 °
Grass Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.06 in
Chance of precipitation35%
Record high64° (2021)
Record low-6° (2014)
Mon, 1646° / 34°0.07
46 °
Grass Valley, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.07 in
Chance of precipitation37%
Record high62° (1976)
Record low-1° (2014)
Tue, 1746° / 34°0.08
46 °
Grass Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.08 in
Chance of precipitation48%
Record high65° (2019)
Record low6° (2014)
Wed, 1844° / 32°0.09
44 °
Grass Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.09 in
Chance of precipitation33%
Record high56° (1965)
Record low12° (2014)
Thu, 1945° / 32°0.11
45 °
Grass Valley, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation42%
Record high59° (1989)
Record low15° (1985)
Fri, 2044° / 32°0.09
44 °
Grass Valley, Friday, 20 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.09 in
Chance of precipitation38%
Record high60° (1974)
Record low8° (1977)
Sat, 2142° / 31°0.07
42 °
Grass Valley, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.07 in
Chance of precipitation32%
Record high58° (1974)
Record low6° (1985)
Sun, 2242° / 30°0.09
42 °
Grass Valley, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.09 in
Chance of precipitation40%
Record high61° (2017)
Record low0° (1985)
Mon, 2343° / 30°0.06
43 °
Grass Valley, Monday, 23 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.06 in
Chance of precipitation50%
Record high58° (2017)
Record low-7° (1985)
Tue, 2443° / 31°0.09
43 °
Grass Valley, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation43%
Record high57° (1995)
Record low-16° (1985)
Wed, 2542° / 30°0.1
42 °
Grass Valley, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.1 in
Chance of precipitation45%
Record high57° (2014)
Record low-19° (1985)
Thu, 2641° / 29°0.06
41 °
Grass Valley, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.06 in
Chance of precipitation23%
Record high56° (2014)
Record low12° (1993)
Fri, 2741° / 30°0.09
41 °
Grass Valley, Friday, 27 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.09 in
Chance of precipitation45%
Record high57° (2011)
Record low6° (1979)
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, OR 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, OR 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.