Monthly outlook for Westmont, CA: average high 72.6°, average low 61.7°. That is 0.1° below the climate normal for October. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 1 days and 0.5 inches. The warmest day looks like 7 November (79.2°), the coolest 2 November (51.2°).
72.6°/61.7°
Average high / low
−0.1°
Below normal
3 / 1
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
73°
73.5°
-0.3°
9 November – 18 November
71.9°
70.8°
+0.6°
19 November – 28 November
at normal
68.8°
—
October records over 66 years
103.5°24 October 2017All-time high
36.1°30 October 1971All-time low
Sat, 3170° / 60°0.14
70 °
Westmont, Saturday, 31 October
Light rain. High 70°, low 60°.
Pressure29.94 inHg
Wind3 mph E
Humidity62%
Visibility6.2 mi
Dew point54°
Sun, 0171° / 56°0.15
71 °
Westmont, Sunday, 1 November
Rain. High 71°, low 56°.
Pressure29.85 inHg
Wind3.5 mph SW
Humidity61%
Visibility6.2 mi
Dew point56°
Mon, 0272° / 51°0
72 °
Westmont, Monday, 2 November
Clear. High 72°, low 51°.
Pressure30.12 inHg
Wind1.1 mph E
Humidity50%
Visibility6.2 mi
Dew point51°
Tue, 0373° / 54°0
73 °
Westmont, Tuesday, 3 November
Clear. High 73°, low 54°.
Pressure30.03 inHg
Wind2.1 mph SW
Humidity51%
Visibility6.2 mi
Dew point52°
Wed, 0474° / 53°0
74 °
Westmont, Wednesday, 4 November
Clear. High 74°, low 53°.
Pressure29.91 inHg
Wind6.2 mph W
Humidity57%
Visibility—
Dew point49°
Thu, 0571° / 57°0
71 °
Westmont, Thursday, 5 November
Overcast. High 71°, low 57°.
Pressure29.94 inHg
Wind7.1 mph S
Humidity64%
Visibility—
Dew point53°
Fri, 0673° / 66°0
73 °
Westmont, Friday, 6 November
Overcast. High 73°, low 66°.
Pressure29.94 inHg
Wind7.9 mph SW
Humidity50%
Visibility—
Dew point50°
Sat, 0779° / 66°0
79 °
Westmont, Saturday, 7 November
Clear. High 79°, low 66°.
Pressure30.03 inHg
Wind8.5 mph W
Humidity26%
Visibility—
Dew point35°
Sun, 0879° / 67°0
79 °
Westmont, Sunday, 8 November
Mostly clear. High 79°, low 67°.
Pressure30.09 inHg
Wind7.9 mph SW
Humidity13%
Visibility—
Dew point19°
Mon, 0976° / 68°0
76 °
Westmont, Monday, 9 November
Overcast. High 76°, low 68°.
Pressure30.03 inHg
Wind6.3 mph SW
Humidity18%
Visibility—
Dew point26°
Tue, 1072° / 66°0
72 °
Westmont, Tuesday, 10 November
Overcast. High 72°, low 66°.
Pressure30.00 inHg
Wind10.9 mph SW
Humidity48%
Visibility—
Dew point49°
Wed, 1169° / 64°0.03
69 °
Westmont, Wednesday, 11 November
Light rain. High 69°, low 64°.
Pressure30.12 inHg
Wind14.7 mph W
Humidity57%
Visibility—
Dew point51°
Thu, 1274° / 64°0
74 °
Westmont, Thursday, 12 November
Overcast. High 74°, low 64°.
Pressure30.09 inHg
Wind8.2 mph W
Humidity50%
Visibility—
Dew point49°
Fri, 1374° / 67°0
74 °
Westmont, Friday, 13 November
Overcast. High 74°, low 67°.
Pressure30.06 inHg
Wind9.2 mph W
Humidity29%
Visibility—
Dew point37°
Sat, 1466° / 64°0.08
66 °
Westmont, Saturday, 14 November
Light rain. High 66°, low 64°.
Pressure29.97 inHg
Wind8.4 mph SW
Humidity61%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sat, 2867° / 46°0.06
67 °
Westmont, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.06 in
Chance of precipitation13%
Record high86° (1977)
Record low35° (1976)
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.