Monthly outlook for Mount Wilson, CA: average high 55.7°, average low 41.8°. That is 9.7° below the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 2 days and 0.6 inches. The warmest day looks like 7 November (65.7°), the coolest 1 November (31.4°).
55.7°/41.8°
Average high / low
−9.7°
Below normal
5 / 2
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
56.2°
74.2°
-10°
9 November – 18 November
54.8°
70.6°
-8.8°
19 November – 28 November
at normal
67.9°
—
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).
Sat, 3153° / 44°0.28
53 °
Mount Wilson, Saturday, 31 October
Rain. High 53°, low 44°.
Pressure29.97 inHg
Wind4.1 mph SE
Humidity68%
Visibility6.2 mi
Dew point41°
Sun, 0147° / 31°0.52
47 °
Mount Wilson, Sunday, 1 November
Rain. High 47°, low 31°.
Pressure29.91 inHg
Wind6 mph SW
Humidity71%
Visibility5.2 mi
Dew point44°
Mon, 0256° / 32°0
56 °
Mount Wilson, Monday, 2 November
Mostly clear. High 56°, low 32°.
Pressure30.12 inHg
Wind0.9 mph NE
Humidity39%
Visibility6.2 mi
Dew point35°
Tue, 0360° / 41°0
60 °
Mount Wilson, Tuesday, 3 November
Clear. High 60°, low 41°.
Pressure30.12 inHg
Wind2.3 mph SW
Humidity30%
Visibility—
Dew point26°
Wed, 0451° / 39°0.02
51 °
Mount Wilson, Wednesday, 4 November
Light rain. High 51°, low 39°.
Pressure30.00 inHg
Wind6.1 mph S
Humidity45%
Visibility—
Dew point29°
Thu, 0553° / 40°0.04
53 °
Mount Wilson, Thursday, 5 November
Light rain. High 53°, low 40°.
Pressure29.83 inHg
Wind7.6 mph S
Humidity67%
Visibility—
Dew point38°
Fri, 0660° / 45°0.01
60 °
Mount Wilson, Friday, 6 November
Light rain. High 60°, low 45°.
Pressure29.83 inHg
Wind6.2 mph N
Humidity44%
Visibility—
Dew point33°
Sat, 0766° / 47°0
66 °
Mount Wilson, Saturday, 7 November
Clear. High 66°, low 47°.
Pressure29.91 inHg
Wind7 mph N
Humidity23%
Visibility—
Dew point22°
Sun, 0864° / 50°0
64 °
Mount Wilson, Sunday, 8 November
Partly cloudy. High 64°, low 50°.
Pressure30.00 inHg
Wind6.7 mph SW
Humidity14%
Visibility—
Dew point11°
Mon, 0956° / 46°0
56 °
Mount Wilson, Monday, 9 November
Overcast. High 56°, low 46°.
Pressure30.06 inHg
Wind6.3 mph S
Humidity51%
Visibility—
Dew point35°
Tue, 1055° / 43°0
55 °
Mount Wilson, Tuesday, 10 November
Clear. High 55°, low 43°.
Pressure30.06 inHg
Wind6.6 mph S
Humidity58%
Visibility—
Dew point36°
Wed, 1147° / 40°0.53
47 °
Mount Wilson, Wednesday, 11 November
Rain. High 47°, low 40°.
Pressure29.94 inHg
Wind9.4 mph S
Humidity97%
Visibility—
Dew point45°
Thu, 1253° / 38°0
53 °
Mount Wilson, Thursday, 12 November
Partly cloudy. High 53°, low 38°.
Pressure29.97 inHg
Wind8.8 mph N
Humidity44%
Visibility—
Dew point26°
Fri, 1359° / 42°0
59 °
Mount Wilson, Friday, 13 November
Clear. High 59°, low 42°.
Pressure30.06 inHg
Wind8 mph N
Humidity23%
Visibility—
Dew point17°
Sat, 1459° / 46°0
59 °
Mount Wilson, Saturday, 14 November
Partly cloudy. High 59°, low 46°.
Pressure30.09 inHg
Wind6 mph S
Humidity19%
Visibility—
Dew point13°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 2369° / 48°0.01
69 °
Mount Wilson, Monday, 23 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.01 in
Chance of precipitation7%
Record high87° (2017)
Record low39° (1983)
Tue, 2469° / 49°0.04
69 °
Mount Wilson, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high69°
Average low49°
Average precipitation0.04 in
Chance of precipitation12%
Record high84° (2017)
Record low40° (1966)
Wed, 2568° / 48°0.04
68 °
Mount Wilson, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high68°
Average low48°
Average precipitation0.04 in
Chance of precipitation5%
Record high89° (1977)
Record low36° (2010)
Thu, 2668° / 48°0.06
68 °
Mount Wilson, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high68°
Average low48°
Average precipitation0.06 in
Chance of precipitation13%
Record high89° (1977)
Record low36° (1984)
Fri, 2766° / 47°0.03
66 °
Mount Wilson, Friday, 27 November
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.03 in
Chance of precipitation10%
Record high86° (2014)
Record low37° (1994)
Sat, 2866° / 46°0.07
66 °
Mount Wilson, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high66°
Average low46°
Average precipitation0.07 in
Chance of precipitation20%
Record high86° (1980)
Record low37° (2010)
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.