Monthly outlook for Mount Washington, CA: average high 77.5°, average low 63.5°. That is 0.2° above the climate normal for October. Precipitation is expected on 2 days (about 1.7 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 26 October (89.9°), the coolest 24 October (52.3°).
77.5°/63.5°
Average high / low
+0.2°
Above normal
2 / 1
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
79.2°
78°
+0.7°
29 October – 7 November
74.7°
75.1°
-0.2°
8 November – 17 November
at normal
71.7°
—
October records over 66 years
104.7°4 October 1987All-time high
35.1°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — South Pasadena (4 mi).
Tue, 2082° / 60°0
82 °
Mount Washington, Tuesday, 20 October
Clear. High 82°, low 60°.
Pressure29.88 inHg
Wind5.3 mph S
Humidity41%
Visibility6.2 mi
Dew point54°
Wed, 2175° / 58°0.5
75 °
Mount Washington, Wednesday, 21 October
Rain. High 75°, low 58°.
Pressure29.88 inHg
Wind5.4 mph S
Humidity55%
Visibility6.2 mi
Dew point57°
Thu, 2265° / 58°1.16
65 °
Mount Washington, Thursday, 22 October
Heavy rain. High 65°, low 58°.
Pressure29.94 inHg
Wind2.2 mph S
Humidity78%
Visibility3.3 mi
Dew point58°
Fri, 2366° / 56°0.02
66 °
Mount Washington, Friday, 23 October
Light rain. High 66°, low 56°.
Pressure29.97 inHg
Wind3.7 mph SE
Humidity69%
Visibility6.2 mi
Dew point55°
Sat, 2471° / 52°0
71 °
Mount Washington, Saturday, 24 October
Clear. High 71°, low 52°.
Pressure29.97 inHg
Wind5.2 mph S
Humidity69%
Visibility—
Dew point53°
Sun, 2583° / 58°0
83 °
Mount Washington, Sunday, 25 October
Mostly clear. High 83°, low 58°.
Pressure30.03 inHg
Wind7.1 mph SW
Humidity43%
Visibility—
Dew point48°
Mon, 2690° / 73°0
90 °
Mount Washington, Monday, 26 October
Clear. High 90°, low 73°.
Pressure29.94 inHg
Wind7.4 mph SW
Humidity10%
Visibility—
Dew point20°
Tue, 2789° / 74°0
89 °
Mount Washington, Tuesday, 27 October
Overcast. High 89°, low 74°.
Pressure29.91 inHg
Wind7.2 mph SW
Humidity9%
Visibility—
Dew point18°
Wed, 2887° / 74°0
87 °
Mount Washington, Wednesday, 28 October
Clear. High 87°, low 74°.
Pressure29.91 inHg
Wind7.4 mph SW
Humidity15%
Visibility—
Dew point31°
Thu, 2979° / 68°0
79 °
Mount Washington, Thursday, 29 October
Overcast. High 79°, low 68°.
Pressure29.91 inHg
Wind7.5 mph SW
Humidity38%
Visibility—
Dew point48°
Fri, 3073° / 66°0
73 °
Mount Washington, Friday, 30 October
Partly cloudy. High 73°, low 66°.
Pressure29.91 inHg
Wind8 mph SW
Humidity48%
Visibility—
Dew point49°
Sat, 3168° / 62°0
68 °
Mount Washington, Saturday, 31 October
Overcast. High 68°, low 62°.
Pressure30.03 inHg
Wind7.7 mph S
Humidity62%
Visibility—
Dew point52°
Sun, 0173° / 62°0
73 °
Mount Washington, Sunday, 1 November
Clear. High 73°, low 62°.
Pressure30.18 inHg
Wind9.4 mph SW
Humidity51%
Visibility—
Dew point49°
Mon, 0280° / 66°0
80 °
Mount Washington, Monday, 2 November
Mostly clear. High 80°, low 66°.
Pressure30.12 inHg
Wind7 mph SW
Humidity27%
Visibility—
Dew point38°
Tue, 0375° / 66°0
75 °
Mount Washington, Tuesday, 3 November
Overcast. High 75°, low 66°.
Pressure30.03 inHg
Wind8.1 mph SW
Humidity47%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0476° / 52°0.02
76 °
Mount Washington, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.02 in
Chance of precipitation7%
Record high94° (1976)
Record low38° (1994)
Thu, 0574° / 51°0
74 °
Mount Washington, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high74°
Average low51°
Average precipitation0 in
Chance of precipitation2%
Record high94° (2020)
Record low39° (2011)
Fri, 0673° / 51°0.02
73 °
Mount Washington, Friday, 6 November
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.02 in
Chance of precipitation7%
Record high92° (2006)
Record low41° (2011)
Sat, 0772° / 51°0.07
72 °
Mount Washington, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.07 in
Chance of precipitation12%
Record high92° (2006)
Record low38° (2011)
Sun, 0873° / 51°0.09
73 °
Mount Washington, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.09 in
Chance of precipitation18%
Record high91° (2016)
Record low39° (2011)
Mon, 0972° / 50°0.04
72 °
Mount Washington, Monday, 9 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.04 in
Chance of precipitation8%
Record high92° (2016)
Record low38° (2020)
Tue, 1072° / 50°0.03
72 °
Mount Washington, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.03 in
Chance of precipitation12%
Record high91° (1990)
Record low40° (2022)
Wed, 1172° / 50°0.04
72 °
Mount Washington, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.04 in
Chance of precipitation8%
Record high89° (2021)
Record low37° (2000)
Thu, 1273° / 50°0.03
73 °
Mount Washington, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high92° (2021)
Record low34° (1978)
Fri, 1373° / 49°0.03
73 °
Mount Washington, Friday, 13 November
Climate normal for this date — 60-year average.
Average high73°
Average low49°
Average precipitation0.03 in
Chance of precipitation8%
Record high91° (2013)
Record low35° (1985)
Sat, 1472° / 50°0.04
72 °
Mount Washington, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.04 in
Chance of precipitation7%
Record high90° (2008)
Record low34° (1964)
Sun, 1572° / 49°0.06
72 °
Mount Washington, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.06 in
Chance of precipitation8%
Record high89° (2008)
Record low34° (1964)
Mon, 1670° / 49°0.04
70 °
Mount Washington, Monday, 16 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.04 in
Chance of precipitation10%
Record high89° (2008)
Record low33° (1964)
Tue, 1770° / 49°0.04
70 °
Mount Washington, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.04 in
Chance of precipitation13%
Record high89° (2008)
Record low38° (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 Mount Washington, 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 Mount Washington, 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.