Monthly outlook for Fairfax, WA: average high 56.5°, average low 42°. That is 0.2° above the climate normal for October. Precipitation is expected on 5 days (about 0.8 inches), against a normal of 7 days and 3.3 inches. The warmest day looks like 16 October (75.3°), the coolest 24 October (34.9°).
56.5°/42°
Average high / low
+0.2°
Above normal
5 / 7
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
57.8°
57.4°
+0.2°
24 October – 2 November
54.2°
53.2°
+0.6°
3 November – 12 November
at normal
50.7°
—
October records over 66 years
86.2°1 October 1987All-time high
24.1°28 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Graham (12 mi).
Thu, 1568° / 43°0
68 °
Fairfax, Thursday, 15 October
Clear. High 68°, low 43°.
Pressure30.33 inHg
Wind2.4 mph NW
Humidity47%
Visibility6.2 mi
Dew point46°
Fri, 1675° / 48°0
75 °
Fairfax, Friday, 16 October
Overcast. High 75°, low 48°.
Pressure30.15 inHg
Wind1.5 mph N
Humidity30%
Visibility6.2 mi
Dew point41°
Sat, 1760° / 47°0.27
60 °
Fairfax, Saturday, 17 October
Rain. High 60°, low 47°.
Pressure30.27 inHg
Wind6.8 mph SW
Humidity67%
Visibility6.2 mi
Dew point46°
Sun, 1857° / 43°0
57 °
Fairfax, Sunday, 18 October
Overcast. High 57°, low 43°.
Pressure30.06 inHg
Wind3 mph N
Humidity53%
Visibility6.2 mi
Dew point37°
Mon, 1956° / 43°0.01
56 °
Fairfax, Monday, 19 October
Light rain. High 56°, low 43°.
Pressure29.94 inHg
Wind4.5 mph NW
Humidity70%
Visibility—
Dew point42°
Tue, 2051° / 41°0
51 °
Fairfax, Tuesday, 20 October
Partly cloudy. High 51°, low 41°.
Pressure30.03 inHg
Wind4.2 mph SE
Humidity76%
Visibility—
Dew point43°
Wed, 2156° / 41°0.06
56 °
Fairfax, Wednesday, 21 October
Light rain. High 56°, low 41°.
Pressure29.97 inHg
Wind6.7 mph SW
Humidity56%
Visibility—
Dew point35°
Thu, 2245° / 40°0.11
45 °
Fairfax, Thursday, 22 October
Light rain. High 45°, low 40°.
Pressure30.18 inHg
Wind6.7 mph SW
Humidity72%
Visibility—
Dew point36°
Fri, 2348° / 36°0
48 °
Fairfax, Friday, 23 October
Partly cloudy. High 48°, low 36°.
Pressure30.45 inHg
Wind5.4 mph SE
Humidity67%
Visibility—
Dew point35°
Sat, 2452° / 35°0
52 °
Fairfax, Saturday, 24 October
Clear. High 52°, low 35°.
Pressure30.59 inHg
Wind5.1 mph SE
Humidity36%
Visibility—
Dew point21°
Sun, 2555° / 41°0
55 °
Fairfax, Sunday, 25 October
Partly cloudy. High 55°, low 41°.
Pressure30.53 inHg
Wind4.7 mph N
Humidity46%
Visibility—
Dew point30°
Mon, 2654° / 41°0
54 °
Fairfax, Monday, 26 October
Overcast. High 54°, low 41°.
Pressure30.39 inHg
Wind5.5 mph NW
Humidity66%
Visibility—
Dew point40°
Tue, 2761° / 47°0.06
61 °
Fairfax, Tuesday, 27 October
Light rain. High 61°, low 47°.
Pressure30.12 inHg
Wind4.8 mph SW
Humidity60%
Visibility—
Dew point43°
Wed, 2855° / 43°0.02
55 °
Fairfax, Wednesday, 28 October
Light rain. High 55°, low 43°.
Pressure30.15 inHg
Wind4.2 mph N
Humidity78%
Visibility—
Dew point43°
Thu, 2948° / 37°0.26
48 °
Fairfax, Thursday, 29 October
Snow. High 48°, low 37°.
Pressure29.97 inHg
Wind11.2 mph SW
Humidity51%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3052° / 40°0.24
52 °
Fairfax, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.24 in
Chance of precipitation55%
Record high61° (1987)
Record low25° (1991)
Sat, 3152° / 41°0.33
52 °
Fairfax, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.33 in
Chance of precipitation60%
Record high65° (1964)
Record low28° (2006)
Sun, 0152° / 40°0.26
52 °
Fairfax, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.26 in
Chance of precipitation55%
Record high67° (1969)
Record low28° (2003)
Mon, 0253° / 40°0.22
53 °
Fairfax, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.22 in
Chance of precipitation60%
Record high67° (1962)
Record low27° (1973)
Tue, 0352° / 41°0.28
52 °
Fairfax, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.28 in
Chance of precipitation62%
Record high65° (2010)
Record low28° (2003)
Wed, 0452° / 41°0.35
52 °
Fairfax, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.35 in
Chance of precipitation60%
Record high67° (1980)
Record low28° (2003)
Thu, 0551° / 40°0.22
51 °
Fairfax, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.22 in
Chance of precipitation67%
Record high64° (1997)
Record low23° (1973)
Fri, 0651° / 40°0.35
51 °
Fairfax, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.35 in
Chance of precipitation58%
Record high63° (1999)
Record low27° (2003)
Sat, 0751° / 40°0.31
51 °
Fairfax, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.31 in
Chance of precipitation68%
Record high64° (2016)
Record low27° (2017)
Sun, 0851° / 39°0.2
51 °
Fairfax, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.2 in
Chance of precipitation48%
Record high66° (2016)
Record low27° (2020)
Mon, 0949° / 39°0.25
49 °
Fairfax, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.25 in
Chance of precipitation72%
Record high61° (1976)
Record low24° (2020)
Tue, 1050° / 39°0.22
50 °
Fairfax, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.22 in
Chance of precipitation52%
Record high64° (2016)
Record low24° (1986)
Wed, 1150° / 39°0.31
50 °
Fairfax, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.31 in
Chance of precipitation62%
Record high62° (1990)
Record low21° (1985)
Thu, 1250° / 40°0.34
50 °
Fairfax, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.34 in
Chance of precipitation67%
Record high62° (1990)
Record low20° (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 Fairfax, WA 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, WA 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.