Monthly outlook for Guernewood, CA: average high 66.2°, average low 49.2°. That is 1.7° below the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 3 days and 1.3 inches. The warmest day looks like 27 October (71.1°), the coolest 23 October (44.4°).
66.2°/49.2°
Average high / low
−1.7°
Below normal
3 / 3
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
67.7°
69.9°
-1.2°
31 October – 9 November
63.7°
66.7°
-1.6°
10 November – 19 November
at normal
62.5°
—
October records over 66 years
105.8°1 October 2020All-time high
36.7°27 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Forestville (7 mi).
Thu, 2255° / 47°0.42
55 °
Guernewood, Thursday, 22 October
Rain. High 55°, low 47°.
Pressure29.94 inHg
Wind2.1 mph NW
Humidity99%
Visibility1.6 mi
Dew point55°
Fri, 2367° / 44°0
67 °
Guernewood, Friday, 23 October
Mostly clear. High 67°, low 44°.
Pressure30.09 inHg
Wind0.7 mph SE
Humidity63%
Visibility6.2 mi
Dew point52°
Sat, 2471° / 49°0
71 °
Guernewood, Saturday, 24 October
Clear. High 71°, low 49°.
Pressure30.03 inHg
Wind2.1 mph SW
Humidity40%
Visibility6.2 mi
Dew point44°
Sun, 2569° / 48°0
69 °
Guernewood, Sunday, 25 October
Mostly clear. High 69°, low 48°.
Pressure30.06 inHg
Wind2.5 mph SE
Humidity36%
Visibility6.2 mi
Dew point40°
Mon, 2666° / 47°0
66 °
Guernewood, Monday, 26 October
Overcast. High 66°, low 47°.
Pressure30.12 inHg
Wind5.8 mph NW
Humidity58%
Visibility—
Dew point46°
Tue, 2771° / 46°0
71 °
Guernewood, Tuesday, 27 October
Clear. High 71°, low 46°.
Pressure30.09 inHg
Wind5.9 mph NW
Humidity42%
Visibility—
Dew point41°
Wed, 2870° / 53°0.02
70 °
Guernewood, Wednesday, 28 October
Light rain. High 70°, low 53°.
Pressure30.03 inHg
Wind5.5 mph SW
Humidity45%
Visibility—
Dew point44°
Thu, 2970° / 51°0
70 °
Guernewood, Thursday, 29 October
Mostly clear. High 70°, low 51°.
Pressure30.00 inHg
Wind5.6 mph SW
Humidity39%
Visibility—
Dew point40°
Fri, 3070° / 50°0
70 °
Guernewood, Friday, 30 October
Partly cloudy. High 70°, low 50°.
Pressure29.91 inHg
Wind5.3 mph SW
Humidity44%
Visibility—
Dew point41°
Sat, 3165° / 45°0
65 °
Guernewood, Saturday, 31 October
Clear. High 65°, low 45°.
Pressure29.80 inHg
Wind14.1 mph W
Humidity38%
Visibility—
Dew point36°
Sun, 0163° / 45°0
63 °
Guernewood, Sunday, 1 November
Overcast. High 63°, low 45°.
Pressure29.88 inHg
Wind5 mph SW
Humidity40%
Visibility—
Dew point36°
Mon, 0258° / 54°0.08
58 °
Guernewood, Monday, 2 November
Light rain. High 58°, low 54°.
Pressure30.00 inHg
Wind5.1 mph E
Humidity83%
Visibility—
Dew point50°
Tue, 0369° / 54°0
69 °
Guernewood, Tuesday, 3 November
Overcast. High 69°, low 54°.
Pressure30.12 inHg
Wind6 mph S
Humidity73%
Visibility—
Dew point54°
Wed, 0468° / 52°0.01
68 °
Guernewood, Wednesday, 4 November
Light rain. High 68°, low 52°.
Pressure30.09 inHg
Wind7.2 mph S
Humidity65%
Visibility—
Dew point49°
Thu, 0559° / 52°0.46
59 °
Guernewood, Thursday, 5 November
Rain. High 59°, low 52°.
Pressure30.00 inHg
Wind8.5 mph S
Humidity96%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0665° / 49°0.08
65 °
Guernewood, Friday, 6 November
Climate normal for this date — 60-year average.
Average high65°
Average low49°
Average precipitation0.08 in
Chance of precipitation25%
Record high79° (1976)
Record low40° (1972)
Sat, 0765° / 48°0.15
65 °
Guernewood, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.15 in
Chance of precipitation23%
Record high80° (1991)
Record low38° (2017)
Sun, 0864° / 47°0.11
64 °
Guernewood, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high64°
Average low47°
Average precipitation0.11 in
Chance of precipitation25%
Record high78° (1976)
Record low38° (2021)
Mon, 0964° / 46°0.13
64 °
Guernewood, Monday, 9 November
Climate normal for this date — 60-year average.
Average high64°
Average low46°
Average precipitation0.13 in
Chance of precipitation27%
Record high80° (2025)
Record low35° (2020)
Tue, 1063° / 46°0.22
63 °
Guernewood, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high63°
Average low46°
Average precipitation0.22 in
Chance of precipitation30%
Record high79° (2025)
Record low35° (2018)
Wed, 1163° / 46°0.15
63 °
Guernewood, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high63°
Average low46°
Average precipitation0.15 in
Chance of precipitation28%
Record high80° (2019)
Record low34° (1978)
Thu, 1264° / 46°0.09
64 °
Guernewood, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high64°
Average low46°
Average precipitation0.09 in
Chance of precipitation22%
Record high77° (1990)
Record low31° (1985)
Fri, 1363° / 46°0.2
63 °
Guernewood, Friday, 13 November
Climate normal for this date — 60-year average.
Average high63°
Average low46°
Average precipitation0.2 in
Chance of precipitation32%
Record high77° (1995)
Record low31° (1985)
Sat, 1463° / 46°0.07
63 °
Guernewood, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high63°
Average low46°
Average precipitation0.07 in
Chance of precipitation23%
Record high81° (2008)
Record low33° (1985)
Sun, 1563° / 46°0.15
63 °
Guernewood, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high63°
Average low46°
Average precipitation0.15 in
Chance of precipitation25%
Record high80° (2008)
Record low34° (2000)
Mon, 1662° / 46°0.19
62 °
Guernewood, Monday, 16 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.19 in
Chance of precipitation30%
Record high77° (2008)
Record low34° (2024)
Tue, 1762° / 45°0.17
62 °
Guernewood, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high62°
Average low45°
Average precipitation0.17 in
Chance of precipitation28%
Record high78° (2019)
Record low33° (2000)
Wed, 1861° / 45°0.1
61 °
Guernewood, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high61°
Average low45°
Average precipitation0.1 in
Chance of precipitation23%
Record high77° (2019)
Record low34° (1964)
Thu, 1961° / 44°0.17
61 °
Guernewood, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high61°
Average low44°
Average precipitation0.17 in
Chance of precipitation27%
Record high74° (1989)
Record low31° (1994)
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 Guernewood, 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 Guernewood, 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.