Monthly outlook for Fairfax, CA: average high 71.2°, average low 52°. That is 2.5° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 16 October (89.7°), the coolest 20 October (46.8°).
71.2°/52°
Average high / low
+2.5°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
74°
67.2°
+3.8°
21 October – 30 October
66.5°
65.1°
+0.8°
31 October – 9 November
at normal
63.1°
—
October records over 66 years
96.4°1 October 2024All-time high
43.2°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Bolinas (8 mi).
Mon, 1267° / 48°0
67 °
Fairfax, Monday, 12 October
Clear. High 67°, low 48°.
Pressure29.91 inHg
Wind1.5 mph S
Humidity38%
Visibility6.2 mi
Dew point41°
Tue, 1377° / 47°0
77 °
Fairfax, Tuesday, 13 October
Clear. High 77°, low 47°.
Pressure30.09 inHg
Wind7.7 mph NE
Humidity22%
Visibility6.2 mi
Dew point25°
Wed, 1481° / 50°0
81 °
Fairfax, Wednesday, 14 October
Clear. High 81°, low 50°.
Pressure30.09 inHg
Wind1.4 mph E
Humidity23%
Visibility6.2 mi
Dew point39°
Thu, 1587° / 52°0
87 °
Fairfax, Thursday, 15 October
Clear. High 87°, low 52°.
Pressure30.06 inHg
Wind3 mph E
Humidity21%
Visibility6.2 mi
Dew point37°
Fri, 1690° / 57°0
90 °
Fairfax, Friday, 16 October
Clear. High 90°, low 57°.
Pressure30.03 inHg
Wind5 mph W
Humidity16%
Visibility—
Dew point30°
Sat, 1773° / 51°0
73 °
Fairfax, Saturday, 17 October
Clear. High 73°, low 51°.
Pressure30.00 inHg
Wind7.6 mph W
Humidity51%
Visibility—
Dew point47°
Sun, 1868° / 54°0
68 °
Fairfax, Sunday, 18 October
Clear. High 68°, low 54°.
Pressure30.03 inHg
Wind9.1 mph W
Humidity57%
Visibility—
Dew point49°
Mon, 1965° / 53°0
65 °
Fairfax, Monday, 19 October
Partly cloudy. High 65°, low 53°.
Pressure30.09 inHg
Wind14.7 mph W
Humidity62%
Visibility—
Dew point49°
Tue, 2065° / 47°0
65 °
Fairfax, Tuesday, 20 October
Clear. High 65°, low 47°.
Pressure30.09 inHg
Wind7.1 mph W
Humidity45%
Visibility—
Dew point38°
Wed, 2167° / 53°0
67 °
Fairfax, Wednesday, 21 October
Clear. High 67°, low 53°.
Pressure30.09 inHg
Wind6.4 mph NW
Humidity30%
Visibility—
Dew point31°
Thu, 2272° / 58°0
72 °
Fairfax, Thursday, 22 October
Clear. High 72°, low 58°.
Pressure30.06 inHg
Wind7.2 mph NW
Humidity35%
Visibility—
Dew point37°
Fri, 2367° / 55°0
67 °
Fairfax, Friday, 23 October
Overcast. High 67°, low 55°.
Pressure29.88 inHg
Wind6.9 mph W
Humidity46%
Visibility—
Dew point42°
Sat, 2462° / 53°0
62 °
Fairfax, Saturday, 24 October
Partly cloudy. High 62°, low 53°.
Pressure29.80 inHg
Wind7.7 mph S
Humidity73%
Visibility—
Dew point50°
Sun, 2564° / 54°0
64 °
Fairfax, Sunday, 25 October
Overcast. High 64°, low 54°.
Pressure29.85 inHg
Wind5.8 mph SW
Humidity61%
Visibility—
Dew point47°
Mon, 2668° / 54°0
68 °
Fairfax, Monday, 26 October
Partly cloudy. High 68°, low 54°.
Pressure29.80 inHg
Wind8.8 mph SW
Humidity48%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2765° / 52°0.04
65 °
Fairfax, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high65°
Average low52°
Average precipitation0.04 in
Chance of precipitation8%
Record high81° (2003)
Record low45° (2004)
Wed, 2864° / 52°0.07
64 °
Fairfax, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high64°
Average low52°
Average precipitation0.07 in
Chance of precipitation17%
Record high79° (2003)
Record low44° (2023)
Thu, 2964° / 51°0.06
64 °
Fairfax, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high64°
Average low51°
Average precipitation0.06 in
Chance of precipitation22%
Record high75° (2025)
Record low43° (1971)
Fri, 3064° / 51°0.06
64 °
Fairfax, Friday, 30 October
Climate normal for this date — 60-year average.
Average high64°
Average low51°
Average precipitation0.06 in
Chance of precipitation17%
Record high78° (1966)
Record low45° (1971)
Sat, 3164° / 51°0.04
64 °
Fairfax, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high64°
Average low51°
Average precipitation0.04 in
Chance of precipitation18%
Record high79° (1966)
Record low44° (1991)
Sun, 0165° / 51°0.06
65 °
Fairfax, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high65°
Average low51°
Average precipitation0.06 in
Chance of precipitation15%
Record high78° (2020)
Record low41° (2003)
Mon, 0265° / 51°0.04
65 °
Fairfax, Monday, 2 November
Climate normal for this date — 60-year average.
Average high65°
Average low51°
Average precipitation0.04 in
Chance of precipitation17%
Record high79° (1997)
Record low44° (2022)
Tue, 0364° / 51°0.04
64 °
Fairfax, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high64°
Average low51°
Average precipitation0.04 in
Chance of precipitation13%
Record high78° (1976)
Record low42° (2022)
Wed, 0464° / 51°0.03
64 °
Fairfax, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high64°
Average low51°
Average precipitation0.03 in
Chance of precipitation12%
Record high79° (1976)
Record low44° (2003)
Thu, 0562° / 51°0.08
62 °
Fairfax, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high62°
Average low51°
Average precipitation0.08 in
Chance of precipitation15%
Record high77° (2020)
Record low46° (1996)
Fri, 0662° / 51°0.07
62 °
Fairfax, Friday, 6 November
Climate normal for this date — 60-year average.
Average high62°
Average low51°
Average precipitation0.07 in
Chance of precipitation20%
Record high75° (1978)
Record low45° (1996)
Sat, 0762° / 51°0.1
62 °
Fairfax, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high62°
Average low51°
Average precipitation0.1 in
Chance of precipitation25%
Record high77° (1991)
Record low43° (2022)
Sun, 0862° / 50°0.09
62 °
Fairfax, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high62°
Average low50°
Average precipitation0.09 in
Chance of precipitation27%
Record high72° (1976)
Record low44° (2011)
Mon, 0961° / 49°0.11
61 °
Fairfax, Monday, 9 November
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.11 in
Chance of precipitation23%
Record high73° (2025)
Record low43° (1998)
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 Fairfax, 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 Fairfax, 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.