Monthly outlook for Whittier, CA: average high 78°, average low 64.3°. That is 0.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 25 October (89.7°), the coolest 24 October (56.2°).
78°/64.3°
Average high / low
+0.4°
Above normal
3 / 1
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
80.6°
78.2°
+1.4°
28 October – 6 November
73.7°
75.4°
-1°
7 November – 16 November
at normal
72°
—
October records over 66 years
104°4 October 1987All-time high
33.8°29 October 1971All-time low
Mon, 1984° / 65°0
84 °
Whittier, Monday, 19 October
Clear. High 84°, low 65°.
Pressure29.91 inHg
Wind3.6 mph SW
Humidity27%
Visibility6.2 mi
Dew point46°
Tue, 2083° / 63°0
83 °
Whittier, Tuesday, 20 October
Clear. High 83°, low 63°.
Pressure29.85 inHg
Wind3.7 mph S
Humidity38%
Visibility6.2 mi
Dew point53°
Wed, 2178° / 63°0.09
78 °
Whittier, Wednesday, 21 October
Rain. High 78°, low 63°.
Pressure29.91 inHg
Wind3.3 mph S
Humidity49%
Visibility6.2 mi
Dew point56°
Thu, 2267° / 60°0.45
67 °
Whittier, Thursday, 22 October
Rain. High 67°, low 60°.
Pressure29.94 inHg
Wind2.8 mph E
Humidity71%
Visibility4.9 mi
Dew point57°
Fri, 2373° / 58°0
73 °
Whittier, Friday, 23 October
Clear. High 73°, low 58°.
Pressure30.00 inHg
Wind8 mph SW
Humidity64%
Visibility—
Dew point53°
Sat, 2482° / 56°0
82 °
Whittier, Saturday, 24 October
Clear. High 82°, low 56°.
Pressure30.03 inHg
Wind7.8 mph W
Humidity46%
Visibility—
Dew point48°
Sun, 2590° / 73°0
90 °
Whittier, Sunday, 25 October
Clear. High 90°, low 73°.
Pressure29.88 inHg
Wind9.3 mph W
Humidity11%
Visibility—
Dew point22°
Mon, 2686° / 73°0
86 °
Whittier, Monday, 26 October
Clear. High 86°, low 73°.
Pressure29.80 inHg
Wind8.3 mph SW
Humidity18%
Visibility—
Dew point33°
Tue, 2777° / 68°0
77 °
Whittier, Tuesday, 27 October
Partly cloudy. High 77°, low 68°.
Pressure29.85 inHg
Wind9.1 mph S
Humidity55%
Visibility—
Dew point56°
Wed, 2869° / 66°0.06
69 °
Whittier, Wednesday, 28 October
Light rain. High 69°, low 66°.
Pressure29.88 inHg
Wind13.2 mph SW
Humidity65%
Visibility—
Dew point55°
Thu, 2971° / 62°0
71 °
Whittier, Thursday, 29 October
Clear. High 71°, low 62°.
Pressure30.00 inHg
Wind12 mph SW
Humidity25%
Visibility—
Dew point29°
Fri, 3071° / 62°0
71 °
Whittier, Friday, 30 October
Clear. High 71°, low 62°.
Pressure29.97 inHg
Wind10.4 mph SW
Humidity40%
Visibility—
Dew point41°
Sat, 3178° / 65°0
78 °
Whittier, Saturday, 31 October
Clear. High 78°, low 65°.
Pressure30.12 inHg
Wind6.2 mph SE
Humidity8%
Visibility—
Dew point7°
Sun, 0179° / 66°0
79 °
Whittier, Sunday, 1 November
Clear. High 79°, low 66°.
Pressure30.09 inHg
Wind9.5 mph W
Humidity8%
Visibility—
Dew point7°
Mon, 0275° / 65°0
75 °
Whittier, Monday, 2 November
Clear. High 75°, low 65°.
Pressure29.94 inHg
Wind9.1 mph S
Humidity33%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 1671° / 49°0.04
71 °
Whittier, Monday, 16 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.04 in
Chance of precipitation8%
Record high92° (2020)
Record low33° (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.