Monthly outlook for Mount Wilson, CA: average high 60.4°, average low 46°. That is 8.2° below the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 1 days and 0.5 inches. The warmest day looks like 8 November (72°), the coolest 29 October (38.6°).
60.4°/46°
Average high / low
−8.2°
Below normal
2 / 1
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
57°
75.9°
-10.5°
3 November – 12 November
66.1°
72.8°
-3.7°
13 November – 22 November
at normal
69.5°
—
October records over 66 years
102.9°1 October 1980All-time high
35.1°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Altadena (5 mi).
Sun, 2565° / 43°0
65 °
Mount Wilson, Sunday, 25 October
Clear. High 65°, low 43°.
Pressure30.09 inHg
Wind4.5 mph SW
Humidity43%
Visibility6.2 mi
Dew point39°
Mon, 2657° / 44°0
57 °
Mount Wilson, Monday, 26 October
Clear. High 57°, low 44°.
Pressure30.09 inHg
Wind4.4 mph SW
Humidity39%
Visibility6.2 mi
Dew point38°
Tue, 2757° / 42°0
57 °
Mount Wilson, Tuesday, 27 October
Clear. High 57°, low 42°.
Pressure30.00 inHg
Wind3.7 mph S
Humidity44%
Visibility6.2 mi
Dew point39°
Wed, 2856° / 41°0
56 °
Mount Wilson, Wednesday, 28 October
Overcast. High 56°, low 41°.
Pressure29.94 inHg
Wind4.9 mph S
Humidity28%
Visibility—
Dew point21°
Thu, 2949° / 39°0
49 °
Mount Wilson, Thursday, 29 October
Overcast. High 49°, low 39°.
Pressure29.94 inHg
Wind6.3 mph S
Humidity64%
Visibility—
Dew point35°
Fri, 3055° / 44°0
55 °
Mount Wilson, Friday, 30 October
Overcast. High 55°, low 44°.
Pressure29.94 inHg
Wind7 mph S
Humidity73%
Visibility—
Dew point42°
Sat, 3154° / 43°0
54 °
Mount Wilson, Saturday, 31 October
Overcast. High 54°, low 43°.
Pressure30.00 inHg
Wind5.3 mph E
Humidity54%
Visibility—
Dew point35°
Sun, 0156° / 47°0.43
56 °
Mount Wilson, Sunday, 1 November
Rain. High 56°, low 47°.
Pressure30.03 inHg
Wind8.3 mph SE
Humidity54%
Visibility—
Dew point38°
Mon, 0258° / 48°0.46
58 °
Mount Wilson, Monday, 2 November
Rain. High 58°, low 48°.
Pressure30.15 inHg
Wind6.4 mph S
Humidity69%
Visibility—
Dew point44°
Tue, 0368° / 49°0
68 °
Mount Wilson, Tuesday, 3 November
Clear. High 68°, low 49°.
Pressure30.15 inHg
Wind8.3 mph N
Humidity38%
Visibility—
Dew point35°
Wed, 0467° / 52°0
67 °
Mount Wilson, Wednesday, 4 November
Partly cloudy. High 67°, low 52°.
Pressure30.03 inHg
Wind8.9 mph N
Humidity18%
Visibility—
Dew point19°
Thu, 0566° / 52°0
66 °
Mount Wilson, Thursday, 5 November
Clear. High 66°, low 52°.
Pressure30.00 inHg
Wind6.3 mph S
Humidity22%
Visibility—
Dew point22°
Fri, 0661° / 50°0
61 °
Mount Wilson, Friday, 6 November
Overcast. High 61°, low 50°.
Pressure30.12 inHg
Wind5.8 mph SW
Humidity39%
Visibility—
Dew point33°
Sat, 0762° / 49°0
62 °
Mount Wilson, Saturday, 7 November
Overcast. High 62°, low 49°.
Pressure30.15 inHg
Wind6.7 mph SW
Humidity66%
Visibility—
Dew point45°
Sun, 0872° / 52°0
72 °
Mount Wilson, Sunday, 8 November
Clear. High 72°, low 52°.
Pressure30.09 inHg
Wind6.8 mph N
Humidity31%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0971° / 52°0.04
71 °
Mount Wilson, Monday, 9 November
Climate normal for this date — 60-year average.
Average high71°
Average low52°
Average precipitation0.04 in
Chance of precipitation13%
Record high89° (2016)
Record low35° (2020)
Tue, 1071° / 51°0.03
71 °
Mount Wilson, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.03 in
Chance of precipitation15%
Record high89° (1990)
Record low39° (2022)
Wed, 1171° / 51°0.06
71 °
Mount Wilson, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.06 in
Chance of precipitation10%
Record high87° (1990)
Record low37° (2000)
Thu, 1272° / 51°0.02
72 °
Mount Wilson, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.02 in
Chance of precipitation12%
Record high88° (2021)
Record low31° (1978)
Fri, 1372° / 51°0.03
72 °
Mount Wilson, Friday, 13 November
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.03 in
Chance of precipitation8%
Record high88° (2013)
Record low35° (1985)
Sat, 1471° / 51°0.05
71 °
Mount Wilson, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.05 in
Chance of precipitation12%
Record high88° (2008)
Record low35° (1964)
Sun, 1571° / 50°0.06
71 °
Mount Wilson, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.06 in
Chance of precipitation12%
Record high86° (2008)
Record low35° (1964)
Mon, 1669° / 50°0.04
69 °
Mount Wilson, Monday, 16 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.04 in
Chance of precipitation10%
Record high88° (2008)
Record low35° (1964)
Tue, 1769° / 50°0.05
69 °
Mount Wilson, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.05 in
Chance of precipitation13%
Record high87° (2008)
Record low37° (1964)
Wed, 1869° / 49°0.06
69 °
Mount Wilson, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high69°
Average low49°
Average precipitation0.06 in
Chance of precipitation17%
Record high85° (2008)
Record low33° (1964)
Thu, 1970° / 49°0.05
70 °
Mount Wilson, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.05 in
Chance of precipitation8%
Record high86° (2006)
Record low32° (1964)
Fri, 2069° / 50°0.07
69 °
Mount Wilson, Friday, 20 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.07 in
Chance of precipitation13%
Record high85° (2006)
Record low36° (1964)
Sat, 2168° / 49°0.09
68 °
Mount Wilson, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high68°
Average low49°
Average precipitation0.09 in
Chance of precipitation17%
Record high86° (2017)
Record low37° (1983)
Sun, 2268° / 49°0.06
68 °
Mount Wilson, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high68°
Average low49°
Average precipitation0.06 in
Chance of precipitation15%
Record high89° (2017)
Record low35° (1983)
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 Wilson, 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 Wilson, 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.