Monthly outlook for Whittier, CA: average high 78°, average low 66.4°. That is 0.3° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 18 October (90.2°), the coolest 22 October (59.2°).
78°/66.4°
Average high / low
+0.3°
Above normal
3 / 1
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
80.6°
78.5°
+1.2°
27 October – 5 November
73.7°
75.8°
-1.1°
6 November – 15 November
at normal
72.3°
—
October records over 66 years
104°4 October 1987All-time high
33.8°29 October 1971All-time low
Sun, 1890° / 75°0
90 °
Whittier, Sunday, 18 October
Clear. High 90°, low 75°.
Pressure29.97 inHg
Wind1.7 mph S
Humidity16%
Visibility6.2 mi
Dew point36°
Mon, 1986° / 63°0
86 °
Whittier, Monday, 19 October
Clear. High 86°, low 63°.
Pressure29.91 inHg
Wind3.6 mph S
Humidity31%
Visibility6.2 mi
Dew point50°
Tue, 2084° / 62°0
84 °
Whittier, Tuesday, 20 October
Clear. High 84°, low 62°.
Pressure29.88 inHg
Wind2.5 mph SW
Humidity39%
Visibility6.2 mi
Dew point53°
Wed, 2173° / 64°0.2
73 °
Whittier, Wednesday, 21 October
Light rain. High 73°, low 64°.
Pressure29.88 inHg
Wind3.8 mph S
Humidity61%
Visibility—
Dew point57°
Thu, 2273° / 59°0.13
73 °
Whittier, Thursday, 22 October
Light rain. High 73°, low 59°.
Pressure29.94 inHg
Wind5.2 mph E
Humidity59%
Visibility—
Dew point54°
Fri, 2374° / 64°0
74 °
Whittier, Friday, 23 October
Clear. High 74°, low 64°.
Pressure30.06 inHg
Wind10.6 mph SW
Humidity51%
Visibility—
Dew point50°
Sat, 2480° / 66°0
80 °
Whittier, Saturday, 24 October
Clear. High 80°, low 66°.
Pressure30.00 inHg
Wind8.8 mph W
Humidity37%
Visibility—
Dew point45°
Sun, 2578° / 68°0
78 °
Whittier, Sunday, 25 October
Partly cloudy. High 78°, low 68°.
Pressure29.85 inHg
Wind8.1 mph SW
Humidity45%
Visibility—
Dew point50°
Mon, 2679° / 68°0
79 °
Whittier, Monday, 26 October
Clear. High 79°, low 68°.
Pressure29.80 inHg
Wind8.7 mph W
Humidity47%
Visibility—
Dew point51°
Tue, 2783° / 72°0
83 °
Whittier, Tuesday, 27 October
Clear. High 83°, low 72°.
Pressure29.85 inHg
Wind9.3 mph S
Humidity14%
Visibility—
Dew point25°
Wed, 2876° / 68°0
76 °
Whittier, Wednesday, 28 October
Overcast. High 76°, low 68°.
Pressure30.00 inHg
Wind11.6 mph S
Humidity54%
Visibility—
Dew point55°
Thu, 2973° / 67°0.03
73 °
Whittier, Thursday, 29 October
Light rain. High 73°, low 67°.
Pressure29.94 inHg
Wind13.2 mph SW
Humidity59%
Visibility—
Dew point56°
Fri, 3072° / 63°0
72 °
Whittier, Friday, 30 October
Overcast. High 72°, low 63°.
Pressure29.94 inHg
Wind9.1 mph SW
Humidity16%
Visibility—
Dew point20°
Sat, 3172° / 66°0
72 °
Whittier, Saturday, 31 October
Overcast. High 72°, low 66°.
Pressure29.88 inHg
Wind12.3 mph SW
Humidity37%
Visibility—
Dew point41°
Sun, 0166° / 60°0.63
66 °
Whittier, Sunday, 1 November
Rain. High 66°, low 60°.
Pressure29.83 inHg
Wind13.1 mph SW
Humidity59%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0276° / 52°0.01
76 °
Whittier, Monday, 2 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.01 in
Chance of precipitation13%
Record high94° (1997)
Record low44° (1971)
Tue, 0377° / 51°0
77 °
Whittier, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high77°
Average low51°
Average precipitation0 in
Chance of precipitation3%
Record high93° (2010)
Record low40° (1990)
Wed, 0476° / 52°0.02
76 °
Whittier, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.02 in
Chance of precipitation5%
Record high94° (1976)
Record low37° (1994)
Thu, 0574° / 51°0.01
74 °
Whittier, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high74°
Average low51°
Average precipitation0.01 in
Chance of precipitation3%
Record high96° (2020)
Record low40° (2011)
Fri, 0673° / 52°0.02
73 °
Whittier, Friday, 6 November
Climate normal for this date — 60-year average.
Average high73°
Average low52°
Average precipitation0.02 in
Chance of precipitation8%
Record high92° (2006)
Record low41° (2011)
Sat, 0772° / 51°0.06
72 °
Whittier, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.06 in
Chance of precipitation8%
Record high91° (2006)
Record low37° (2011)
Sun, 0873° / 51°0.08
73 °
Whittier, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.08 in
Chance of precipitation18%
Record high91° (2016)
Record low38° (2011)
Mon, 0972° / 50°0.04
72 °
Whittier, Monday, 9 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.04 in
Chance of precipitation15%
Record high92° (2016)
Record low40° (2020)
Tue, 1072° / 50°0.03
72 °
Whittier, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high91° (1990)
Record low41° (1998)
Wed, 1172° / 49°0.05
72 °
Whittier, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.05 in
Chance of precipitation10%
Record high90° (2021)
Record low37° (2012)
Thu, 1273° / 50°0.03
73 °
Whittier, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high93° (2021)
Record low35° (1978)
Fri, 1373° / 49°0.03
73 °
Whittier, Friday, 13 November
Climate normal for this date — 60-year average.
Average high73°
Average low49°
Average precipitation0.03 in
Chance of precipitation10%
Record high92° (2021)
Record low36° (2000)
Sat, 1472° / 49°0.04
72 °
Whittier, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.04 in
Chance of precipitation8%
Record high92° (2021)
Record low35° (1964)
Sun, 1572° / 49°0.06
72 °
Whittier, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.06 in
Chance of precipitation7%
Record high88° (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 Whittier, 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 Whittier, 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.