Monthly outlook for Grass Valley, OR: average high 50.2°, average low 37.3°. That is 0.8° below the climate normal for October. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 5 November (57.9°), the coolest 30 October (31.7°).
50.2°/37.3°
Average high / low
−0.8°
Below normal
5 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
25 October – 3 November
49.7°
52.6°
-1.6°
4 November – 13 November
50.9°
49°
+1.1°
14 November – 23 November
at normal
44.6°
—
October records over 66 years
88°2 October 1975All-time high
17.4°30 October 2019All-time low
Mon, 2652° / 33°0.03
52 °
Grass Valley, Monday, 26 October
Light rain. High 52°, low 33°.
Pressure30.06 inHg
Wind7.3 mph W
Humidity58%
Visibility6.2 mi
Dew point38°
Tue, 2753° / 34°0.06
53 °
Grass Valley, Tuesday, 27 October
Light rain. High 53°, low 34°.
Pressure30.03 inHg
Wind7.9 mph W
Humidity58%
Visibility6.2 mi
Dew point38°
Wed, 2849° / 38°0.14
49 °
Grass Valley, Wednesday, 28 October
Light rain. High 49°, low 38°.
Pressure30.03 inHg
Wind11.4 mph SW
Humidity66%
Visibility6.2 mi
Dew point38°
Thu, 2950° / 35°0.07
50 °
Grass Valley, Thursday, 29 October
Light rain. High 50°, low 35°.
Pressure29.97 inHg
Wind0.9 mph NE
Humidity65%
Visibility6.2 mi
Dew point35°
Fri, 3048° / 32°0
48 °
Grass Valley, Friday, 30 October
Mostly clear. High 48°, low 32°.
Pressure30.03 inHg
Wind4 mph N
Humidity78%
Visibility—
Dew point34°
Sat, 3148° / 35°0
48 °
Grass Valley, Saturday, 31 October
Overcast. High 48°, low 35°.
Pressure30.00 inHg
Wind8.5 mph NE
Humidity63%
Visibility—
Dew point30°
Sun, 0150° / 40°0
50 °
Grass Valley, Sunday, 1 November
Overcast. High 50°, low 40°.
Pressure29.88 inHg
Wind10.5 mph NW
Humidity62%
Visibility—
Dew point33°
Mon, 0250° / 34°0
50 °
Grass Valley, Monday, 2 November
Mostly clear. High 50°, low 34°.
Pressure30.09 inHg
Wind5.3 mph SW
Humidity54%
Visibility—
Dew point26°
Tue, 0349° / 39°0
49 °
Grass Valley, Tuesday, 3 November
Overcast. High 49°, low 39°.
Pressure30.09 inHg
Wind9.5 mph NE
Humidity56%
Visibility—
Dew point29°
Wed, 0450° / 38°0.17
50 °
Grass Valley, Wednesday, 4 November
Light rain. High 50°, low 38°.
Pressure29.83 inHg
Wind12.3 mph NE
Humidity55%
Visibility—
Dew point29°
Thu, 0558° / 42°0.17
58 °
Grass Valley, Thursday, 5 November
Light rain. High 58°, low 42°.
Pressure29.68 inHg
Wind25.9 mph SW
Humidity65%
Visibility—
Dew point40°
Fri, 0649° / 42°0.01
49 °
Grass Valley, Friday, 6 November
Light rain. High 49°, low 42°.
Pressure29.88 inHg
Wind23 mph SW
Humidity62%
Visibility—
Dew point35°
Sat, 0751° / 42°0
51 °
Grass Valley, Saturday, 7 November
Partly cloudy. High 51°, low 42°.
Pressure30.15 inHg
Wind16.4 mph SW
Humidity58%
Visibility—
Dew point34°
Sun, 0850° / 41°0.01
50 °
Grass Valley, Sunday, 8 November
Light rain. High 50°, low 41°.
Pressure30.15 inHg
Wind15.5 mph SW
Humidity66%
Visibility—
Dew point37°
Mon, 0947° / 38°0
47 °
Grass Valley, Monday, 9 November
Overcast. High 47°, low 38°.
Pressure30.39 inHg
Wind12.3 mph E
Humidity75%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1048° / 35°0.07
48 °
Grass Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation30%
Record high63° (1989)
Record low18° (1986)
Wed, 1148° / 35°0.08
48 °
Grass Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.08 in
Chance of precipitation27%
Record high64° (1990)
Record low11° (1985)
Thu, 1248° / 35°0.07
48 °
Grass Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation40%
Record high66° (1999)
Record low-4° (1985)
Fri, 1347° / 35°0.09
47 °
Grass Valley, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.09 in
Chance of precipitation40%
Record high66° (1999)
Record low1° (1985)
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)
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.