Monthly outlook for Grass Valley, OR: average high 56.8°, average low 41.1°. That is 1.8° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 5 November (64°), the coolest 23 October (32.9°).
56.8°/41.1°
Average high / low
+1.8°
Above normal
4 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
56.6°
55°
+0.9°
31 October – 9 November
57.2°
50.3°
+3.8°
10 November – 19 November
at normal
46.6°
—
October records over 66 years
88°2 October 1975All-time high
17.4°30 October 2019All-time low
Thu, 2257° / 35°0
57 °
Grass Valley, Thursday, 22 October
Overcast. High 57°, low 35°.
Pressure29.85 inHg
Wind2.5 mph NW
Humidity45%
Visibility6.2 mi
Dew point34°
Fri, 2353° / 33°0
53 °
Grass Valley, Friday, 23 October
Mostly clear. High 53°, low 33°.
Pressure30.24 inHg
Wind11.3 mph NW
Humidity55%
Visibility4.5 mi
Dew point34°
Sat, 2457° / 35°0
57 °
Grass Valley, Saturday, 24 October
Overcast. High 57°, low 35°.
Pressure30.18 inHg
Wind1.1 mph SW
Humidity43%
Visibility6.2 mi
Dew point29°
Sun, 2557° / 41°0
57 °
Grass Valley, Sunday, 25 October
Overcast. High 57°, low 41°.
Pressure30.15 inHg
Wind6.1 mph E
Humidity42%
Visibility6.2 mi
Dew point30°
Mon, 2656° / 43°0
56 °
Grass Valley, Monday, 26 October
Overcast. High 56°, low 43°.
Pressure30.21 inHg
Wind8 mph E
Humidity43%
Visibility—
Dew point31°
Tue, 2754° / 42°0.14
54 °
Grass Valley, Tuesday, 27 October
Rain. High 54°, low 42°.
Pressure30.21 inHg
Wind11.6 mph NE
Humidity51%
Visibility—
Dew point32°
Wed, 2853° / 41°0
53 °
Grass Valley, Wednesday, 28 October
Overcast. High 53°, low 41°.
Pressure30.21 inHg
Wind8.9 mph E
Humidity39%
Visibility—
Dew point24°
Thu, 2959° / 40°0
59 °
Grass Valley, Thursday, 29 October
Overcast. High 59°, low 40°.
Pressure30.06 inHg
Wind3.6 mph NW
Humidity37%
Visibility—
Dew point25°
Fri, 3058° / 48°0.02
58 °
Grass Valley, Friday, 30 October
Light rain. High 58°, low 48°.
Pressure29.88 inHg
Wind7.8 mph NW
Humidity40%
Visibility—
Dew point30°
Sat, 3150° / 43°0.05
50 °
Grass Valley, Saturday, 31 October
Light rain. High 50°, low 43°.
Pressure29.91 inHg
Wind4 mph NW
Humidity72%
Visibility—
Dew point39°
Sun, 0157° / 40°0
57 °
Grass Valley, Sunday, 1 November
Clear. High 57°, low 40°.
Pressure30.00 inHg
Wind9.9 mph NE
Humidity59%
Visibility—
Dew point35°
Mon, 0253° / 44°0.04
53 °
Grass Valley, Monday, 2 November
Light rain. High 53°, low 44°.
Pressure30.00 inHg
Wind4.8 mph NE
Humidity57%
Visibility—
Dew point35°
Tue, 0359° / 47°0
59 °
Grass Valley, Tuesday, 3 November
Overcast. High 59°, low 47°.
Pressure30.09 inHg
Wind6.2 mph N
Humidity66%
Visibility—
Dew point43°
Wed, 0460° / 45°0
60 °
Grass Valley, Wednesday, 4 November
Overcast. High 60°, low 45°.
Pressure30.03 inHg
Wind6.4 mph N
Humidity59%
Visibility—
Dew point39°
Thu, 0564° / 48°0.54
64 °
Grass Valley, Thursday, 5 November
Rain. High 64°, low 48°.
Pressure29.91 inHg
Wind7.7 mph N
Humidity53%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0650° / 37°0.09
50 °
Grass Valley, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.09 in
Chance of precipitation43%
Record high66° (2012)
Record low23° (1973)
Sat, 0749° / 36°0.1
49 °
Grass Valley, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation40%
Record high67° (1978)
Record low25° (2017)
Sun, 0848° / 35°0.07
48 °
Grass Valley, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation32%
Record high60° (2016)
Record low25° (1994)
Mon, 0948° / 34°0.06
48 °
Grass Valley, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.06 in
Chance of precipitation30%
Record high62° (1989)
Record low24° (2022)
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)
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.