Monthly outlook for Mount Washington, CA: average high 75.7°, average low 63.6°. That is 1° below the climate normal for October. Precipitation is expected on 3 days (about 1.8 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 18 October (89.7°), the coolest 22 October (56.6°).
75.7°/63.6°
Average high / low
−1°
Below normal
3 / 1
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
78.9°
78.6°
+0.2°
27 October – 5 November
70.4°
75.8°
-3°
6 November – 15 November
at normal
72.3°
—
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).
Sun, 1890° / 67°0
90 °
Mount Washington, Sunday, 18 October
Clear. High 90°, low 67°.
Pressure29.97 inHg
Wind4.2 mph S
Humidity22%
Visibility6.2 mi
Dew point41°
Mon, 1985° / 66°0
85 °
Mount Washington, Monday, 19 October
Clear. High 85°, low 66°.
Pressure29.88 inHg
Wind5.1 mph SE
Humidity25%
Visibility6.2 mi
Dew point44°
Tue, 2079° / 62°0
79 °
Mount Washington, Tuesday, 20 October
Clear. High 79°, low 62°.
Pressure29.88 inHg
Wind5.6 mph S
Humidity51%
Visibility6.2 mi
Dew point58°
Wed, 2176° / 59°0.24
76 °
Mount Washington, Wednesday, 21 October
Rain. High 76°, low 59°.
Pressure29.88 inHg
Wind6.1 mph S
Humidity48%
Visibility6.2 mi
Dew point52°
Thu, 2265° / 57°1.46
65 °
Mount Washington, Thursday, 22 October
Heavy rain. High 65°, low 57°.
Pressure29.91 inHg
Wind6.3 mph E
Humidity78%
Visibility—
Dew point57°
Fri, 2372° / 58°0
72 °
Mount Washington, Friday, 23 October
Clear. High 72°, low 58°.
Pressure30.00 inHg
Wind10.1 mph SW
Humidity59%
Visibility—
Dew point50°
Sat, 2479° / 65°0
79 °
Mount Washington, Saturday, 24 October
Clear. High 79°, low 65°.
Pressure29.97 inHg
Wind8.8 mph SW
Humidity32%
Visibility—
Dew point41°
Sun, 2580° / 68°0
80 °
Mount Washington, Sunday, 25 October
Overcast. High 80°, low 68°.
Pressure29.91 inHg
Wind7.5 mph SW
Humidity32%
Visibility—
Dew point43°
Mon, 2676° / 67°0
76 °
Mount Washington, Monday, 26 October
Overcast. High 76°, low 67°.
Pressure29.74 inHg
Wind10.7 mph SW
Humidity44%
Visibility—
Dew point50°
Tue, 2769° / 63°0.07
69 °
Mount Washington, Tuesday, 27 October
Light rain. High 69°, low 63°.
Pressure29.91 inHg
Wind9.2 mph SW
Humidity58%
Visibility—
Dew point52°
Wed, 2870° / 62°0.01
70 °
Mount Washington, Wednesday, 28 October
Light rain. High 70°, low 62°.
Pressure30.12 inHg
Wind9.6 mph SW
Humidity54%
Visibility—
Dew point49°
Thu, 2970° / 61°0
70 °
Mount Washington, Thursday, 29 October
Overcast. High 70°, low 61°.
Pressure30.03 inHg
Wind8.3 mph SW
Humidity58%
Visibility—
Dew point50°
Fri, 3071° / 61°0
71 °
Mount Washington, Friday, 30 October
Clear. High 71°, low 61°.
Pressure30.00 inHg
Wind9.3 mph SW
Humidity37%
Visibility—
Dew point39°
Sat, 3171° / 62°0
71 °
Mount Washington, Saturday, 31 October
Overcast. High 71°, low 62°.
Pressure30.03 inHg
Wind7.9 mph SW
Humidity52%
Visibility—
Dew point48°
Sun, 0171° / 64°0
71 °
Mount Washington, Sunday, 1 November
Overcast. High 71°, low 64°.
Pressure30.03 inHg
Wind8.8 mph SE
Humidity59%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0276° / 52°0.01
76 °
Mount Washington, Monday, 2 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.01 in
Chance of precipitation8%
Record high95° (1997)
Record low44° (1974)
Tue, 0377° / 51°0
77 °
Mount Washington, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high77°
Average low51°
Average precipitation0 in
Chance of precipitation2%
Record high94° (1976)
Record low42° (1990)
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)
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.