Monthly outlook for Westmont, CA: average high 71.8°, average low 62.4°. That is 0.6° below the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 3 November (77.1°), the coolest 2 November (52.8°).
71.8°/62.4°
Average high / low
−0.6°
Below normal
4 / 1
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
72°
73.8°
-1°
8 November – 17 November
71.4°
71°
+0.2°
18 November – 27 November
at normal
69°
—
October records over 66 years
103.5°24 October 2017All-time high
36.1°30 October 1971All-time low
Fri, 3072° / 63°0.01
72 °
Westmont, Friday, 30 October
Light rain. High 72°, low 63°.
Pressure29.91 inHg
Wind4.7 mph SE
Humidity46%
Visibility6.2 mi
Dew point50°
Sat, 3168° / 61°0.05
68 °
Westmont, Saturday, 31 October
Light rain. High 68°, low 61°.
Pressure29.97 inHg
Wind4.5 mph SE
Humidity65%
Visibility5.4 mi
Dew point56°
Sun, 0169° / 59°0.3
69 °
Westmont, Sunday, 1 November
Rain. High 69°, low 59°.
Pressure29.88 inHg
Wind2.8 mph S
Humidity71%
Visibility6.2 mi
Dew point57°
Mon, 0272° / 53°0
72 °
Westmont, Monday, 2 November
Clear. High 72°, low 53°.
Pressure30.09 inHg
Wind0.6 mph NE
Humidity56%
Visibility6.2 mi
Dew point52°
Tue, 0377° / 53°0
77 °
Westmont, Tuesday, 3 November
Clear. High 77°, low 53°.
Pressure30.09 inHg
Wind2.8 mph SW
Humidity47%
Visibility—
Dew point47°
Wed, 0471° / 63°0
71 °
Westmont, Wednesday, 4 November
Partly cloudy. High 71°, low 63°.
Pressure29.91 inHg
Wind10.6 mph SW
Humidity55%
Visibility—
Dew point52°
Thu, 0571° / 65°0
71 °
Westmont, Thursday, 5 November
Partly cloudy. High 71°, low 65°.
Pressure29.91 inHg
Wind7.7 mph SW
Humidity57%
Visibility—
Dew point52°
Fri, 0672° / 65°0
72 °
Westmont, Friday, 6 November
Clear. High 72°, low 65°.
Pressure29.94 inHg
Wind10.7 mph SW
Humidity56%
Visibility—
Dew point52°
Sat, 0775° / 66°0
75 °
Westmont, Saturday, 7 November
Clear. High 75°, low 66°.
Pressure30.06 inHg
Wind7.9 mph W
Humidity32%
Visibility—
Dew point39°
Sun, 0877° / 67°0
77 °
Westmont, Sunday, 8 November
Mostly clear. High 77°, low 67°.
Pressure30.18 inHg
Wind8.6 mph SW
Humidity33%
Visibility—
Dew point42°
Mon, 0977° / 68°0
77 °
Westmont, Monday, 9 November
Overcast. High 77°, low 68°.
Pressure30.12 inHg
Wind5.7 mph W
Humidity34%
Visibility—
Dew point42°
Tue, 1072° / 67°0
72 °
Westmont, Tuesday, 10 November
Overcast. High 72°, low 67°.
Pressure30.00 inHg
Wind6.8 mph SW
Humidity51%
Visibility—
Dew point51°
Wed, 1168° / 64°0.32
68 °
Westmont, Wednesday, 11 November
Rain. High 68°, low 64°.
Pressure29.94 inHg
Wind21.6 mph SW
Humidity57%
Visibility—
Dew point51°
Thu, 1266° / 62°0.1
66 °
Westmont, Thursday, 12 November
Light rain. High 66°, low 62°.
Pressure29.83 inHg
Wind22.3 mph W
Humidity51%
Visibility—
Dew point47°
Fri, 1369° / 60°0
69 °
Westmont, Friday, 13 November
Clear. High 69°, low 60°.
Pressure30.00 inHg
Wind14.4 mph N
Humidity35%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1471° / 50°0.04
71 °
Westmont, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.04 in
Chance of precipitation7%
Record high90° (2021)
Record low37° (1985)
Sun, 1571° / 50°0.06
71 °
Westmont, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.06 in
Chance of precipitation7%
Record high89° (2008)
Record low37° (2000)
Mon, 1670° / 50°0.04
70 °
Westmont, Monday, 16 November
Climate normal for this date — 60-year average.
Average high70°
Average low50°
Average precipitation0.04 in
Chance of precipitation10%
Record high92° (2020)
Record low36° (1964)
Tue, 1769° / 51°0.04
69 °
Westmont, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.04 in
Chance of precipitation12%
Record high92° (2019)
Record low39° (1971)
Wed, 1870° / 49°0.04
70 °
Westmont, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.04 in
Chance of precipitation10%
Record high90° (2019)
Record low37° (1964)
Thu, 1970° / 48°0.06
70 °
Westmont, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high70°
Average low48°
Average precipitation0.06 in
Chance of precipitation7%
Record high86° (1989)
Record low32° (1964)
Fri, 2069° / 49°0.06
69 °
Westmont, Friday, 20 November
Climate normal for this date — 60-year average.
Average high69°
Average low49°
Average precipitation0.06 in
Chance of precipitation12%
Record high85° (2002)
Record low34° (1964)
Sat, 2168° / 49°0.08
68 °
Westmont, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high68°
Average low49°
Average precipitation0.08 in
Chance of precipitation18%
Record high87° (2021)
Record low35° (1964)
Sun, 2269° / 48°0.05
69 °
Westmont, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.05 in
Chance of precipitation12%
Record high93° (2017)
Record low34° (1979)
Mon, 2369° / 48°0.01
69 °
Westmont, Monday, 23 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.01 in
Chance of precipitation7%
Record high92° (2017)
Record low37° (2003)
Tue, 2469° / 48°0.04
69 °
Westmont, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.04 in
Chance of precipitation8%
Record high86° (2017)
Record low38° (1972)
Wed, 2569° / 47°0.04
69 °
Westmont, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high69°
Average low47°
Average precipitation0.04 in
Chance of precipitation7%
Record high90° (1977)
Record low36° (2010)
Thu, 2669° / 47°0.06
69 °
Westmont, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high69°
Average low47°
Average precipitation0.06 in
Chance of precipitation13%
Record high86° (1977)
Record low34° (2010)
Fri, 2768° / 46°0.02
68 °
Westmont, Friday, 27 November
Climate normal for this date — 60-year average.
Average high68°
Average low46°
Average precipitation0.02 in
Chance of precipitation7%
Record high85° (2014)
Record low36° (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 Westmont, 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 Westmont, 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.