Monthly outlook for Westminster, CA: average high 79.3°, average low 67.2°. That is 1.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 17 October (92.5°), the coolest 13 October (55.4°).
79.3°/67.2°
Average high / low
+1.4°
Above normal
3 / 1
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
79.6°
77.1°
+1.4°
19 October – 28 October
78.9°
75.6°
+1.8°
29 October – 7 November
at normal
73.3°
—
October records over 66 years
105.8°24 October 2017All-time high
36.7°30 October 1971All-time low
Sat, 1087° / 68°0.05
87 °
Westminster, Saturday, 10 October
Light rain. High 87°, low 68°.
Pressure29.65 inHg
Wind1.7 mph SW
Humidity45%
Visibility6.2 mi
Dew point59°
Sun, 1170° / 64°0.45
70 °
Westminster, Sunday, 11 October
Rain. High 70°, low 64°.
Pressure29.65 inHg
Wind10.2 mph SW
Humidity81%
Visibility6.2 mi
Dew point62°
Mon, 1268° / 60°0.22
68 °
Westminster, Monday, 12 October
Rain. High 68°, low 60°.
Pressure29.88 inHg
Wind4.6 mph SW
Humidity66%
Visibility6.2 mi
Dew point54°
Tue, 1367° / 55°0
67 °
Westminster, Tuesday, 13 October
Clear. High 67°, low 55°.
Pressure30.00 inHg
Wind2.2 mph S
Humidity61%
Visibility6.2 mi
Dew point52°
Wed, 1473° / 56°0
73 °
Westminster, Wednesday, 14 October
Clear. High 73°, low 56°.
Pressure30.09 inHg
Wind3.1 mph SW
Humidity66%
Visibility—
Dew point54°
Thu, 1578° / 58°0
78 °
Westminster, Thursday, 15 October
Clear. High 78°, low 58°.
Pressure30.03 inHg
Wind8.8 mph SW
Humidity47%
Visibility—
Dew point51°
Fri, 1689° / 74°0
89 °
Westminster, Friday, 16 October
Clear. High 89°, low 74°.
Pressure29.97 inHg
Wind10 mph W
Humidity21%
Visibility—
Dew point38°
Sat, 1793° / 78°0
93 °
Westminster, Saturday, 17 October
Clear. High 93°, low 78°.
Pressure29.94 inHg
Wind10.4 mph W
Humidity19%
Visibility—
Dew point39°
Sun, 1879° / 72°0
79 °
Westminster, Sunday, 18 October
Clear. High 79°, low 72°.
Pressure29.91 inHg
Wind9.5 mph SW
Humidity46%
Visibility—
Dew point56°
Mon, 1974° / 69°0
74 °
Westminster, Monday, 19 October
Clear. High 74°, low 69°.
Pressure29.94 inHg
Wind10.4 mph SW
Humidity65%
Visibility—
Dew point60°
Tue, 2073° / 68°0
73 °
Westminster, Tuesday, 20 October
Clear. High 73°, low 68°.
Pressure29.94 inHg
Wind8.5 mph SW
Humidity60%
Visibility—
Dew point57°
Wed, 2180° / 69°0
80 °
Westminster, Wednesday, 21 October
Clear. High 80°, low 69°.
Pressure29.97 inHg
Wind9.4 mph W
Humidity50%
Visibility—
Dew point55°
Thu, 2278° / 71°0
78 °
Westminster, Thursday, 22 October
Clear. High 78°, low 71°.
Pressure29.91 inHg
Wind8.6 mph SW
Humidity43%
Visibility—
Dew point52°
Fri, 2381° / 71°0
81 °
Westminster, Friday, 23 October
Clear. High 81°, low 71°.
Pressure29.91 inHg
Wind8.9 mph SW
Humidity44%
Visibility—
Dew point53°
Sat, 2487° / 75°0
87 °
Westminster, Saturday, 24 October
Overcast. High 87°, low 75°.
Pressure30.00 inHg
Wind10.6 mph NE
Humidity17%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2576° / 58°0.01
76 °
Westminster, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.01 in
Chance of precipitation5%
Record high97° (2017)
Record low46° (1975)
Mon, 2675° / 56°0
75 °
Westminster, Monday, 26 October
Climate normal for this date — 60-year average.
Average high75°
Average low56°
Average precipitation0 in
Chance of precipitation3%
Record high91° (1993)
Record low47° (1989)
Tue, 2775° / 56°0.05
75 °
Westminster, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high75°
Average low56°
Average precipitation0.05 in
Chance of precipitation8%
Record high91° (1973)
Record low46° (1996)
Wed, 2874° / 55°0.01
74 °
Westminster, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0.01 in
Chance of precipitation7%
Record high91° (2025)
Record low42° (1970)
Thu, 2974° / 55°0
74 °
Westminster, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0 in
Chance of precipitation7%
Record high94° (2025)
Record low38° (1971)
Fri, 3073° / 55°0.04
73 °
Westminster, Friday, 30 October
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.04 in
Chance of precipitation15%
Record high92° (1962)
Record low37° (1971)
Sat, 3174° / 54°0.02
74 °
Westminster, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high74°
Average low54°
Average precipitation0.02 in
Chance of precipitation7%
Record high89° (1967)
Record low43° (1971)
Sun, 0174° / 53°0.04
74 °
Westminster, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high74°
Average low53°
Average precipitation0.04 in
Chance of precipitation12%
Record high94° (1966)
Record low42° (1971)
Mon, 0274° / 54°0.01
74 °
Westminster, Monday, 2 November
Climate normal for this date — 60-year average.
Average high74°
Average low54°
Average precipitation0.01 in
Chance of precipitation5%
Record high93° (1997)
Record low43° (1971)
Tue, 0375° / 53°0
75 °
Westminster, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high75°
Average low53°
Average precipitation0 in
Chance of precipitation0%
Record high91° (2010)
Record low45° (1989)
Wed, 0473° / 53°0.02
73 °
Westminster, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high73°
Average low53°
Average precipitation0.02 in
Chance of precipitation5%
Record high94° (1976)
Record low40° (1994)
Thu, 0572° / 53°0.01
72 °
Westminster, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high72°
Average low53°
Average precipitation0.01 in
Chance of precipitation2%
Record high96° (2020)
Record low45° (2011)
Fri, 0672° / 54°0.02
72 °
Westminster, Friday, 6 November
Climate normal for this date — 60-year average.
Average high72°
Average low54°
Average precipitation0.02 in
Chance of precipitation7%
Record high89° (2006)
Record low45° (2011)
Sat, 0771° / 54°0.05
71 °
Westminster, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.05 in
Chance of precipitation8%
Record high87° (2006)
Record low42° (2011)
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 Westminster, 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 Westminster, 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.