Monthly outlook for Brea Chem, CA: average high 76°, average low 62.5°. That is 1° above the climate normal for October. Precipitation is expected on 1 day (about 1.7 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 9 November (84.7°), the coolest 2 November (52.5°).
76°/62.5°
Average high / low
+1°
Above normal
1 / 2
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
28 October – 6 November
74.2°
75.3°
-0.6°
7 November – 16 November
79°
72.1°
+3.8°
17 November – 26 November
at normal
69.7°
—
October records over 66 years
104.9°23 October 2017All-time high
35.6°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Placentia (3 mi).
Thu, 2976° / 59°0
76 °
Brea Chem, Thursday, 29 October
Overcast. High 76°, low 59°.
Pressure29.91 inHg
Wind3.2 mph S
Humidity50%
Visibility6.2 mi
Dew point54°
Fri, 3071° / 61°0
71 °
Brea Chem, Friday, 30 October
Overcast. High 71°, low 61°.
Pressure29.94 inHg
Wind5 mph S
Humidity54%
Visibility6.2 mi
Dew point52°
Sat, 3167° / 60°0
67 °
Brea Chem, Saturday, 31 October
Overcast. High 67°, low 60°.
Pressure29.97 inHg
Wind1.8 mph E
Humidity63%
Visibility6.2 mi
Dew point52°
Sun, 0171° / 59°0.02
71 °
Brea Chem, Sunday, 1 November
Light rain. High 71°, low 59°.
Pressure29.88 inHg
Wind3 mph W
Humidity63%
Visibility6.2 mi
Dew point53°
Mon, 0277° / 53°0
77 °
Brea Chem, Monday, 2 November
Clear. High 77°, low 53°.
Pressure30.09 inHg
Wind4.9 mph E
Humidity38%
Visibility—
Dew point41°
Tue, 0382° / 55°0
82 °
Brea Chem, Tuesday, 3 November
Clear. High 82°, low 55°.
Pressure30.09 inHg
Wind8.2 mph W
Humidity18%
Visibility—
Dew point28°
Wed, 0476° / 66°0
76 °
Brea Chem, Wednesday, 4 November
Clear. High 76°, low 66°.
Pressure29.94 inHg
Wind10.6 mph SW
Humidity51%
Visibility—
Dew point51°
Thu, 0572° / 64°0
72 °
Brea Chem, Thursday, 5 November
Partly cloudy. High 72°, low 64°.
Pressure29.94 inHg
Wind10.7 mph SW
Humidity60%
Visibility—
Dew point54°
Fri, 0673° / 65°0
73 °
Brea Chem, Friday, 6 November
Overcast. High 73°, low 65°.
Pressure29.94 inHg
Wind9.1 mph W
Humidity54%
Visibility—
Dew point51°
Sat, 0779° / 65°0
79 °
Brea Chem, Saturday, 7 November
Mostly clear. High 79°, low 65°.
Pressure30.00 inHg
Wind7.5 mph SW
Humidity37%
Visibility—
Dew point44°
Sun, 0883° / 68°0
83 °
Brea Chem, Sunday, 8 November
Clear. High 83°, low 68°.
Pressure30.03 inHg
Wind6.4 mph W
Humidity19%
Visibility—
Dew point30°
Mon, 0985° / 71°0
85 °
Brea Chem, Monday, 9 November
Mostly clear. High 85°, low 71°.
Pressure30.06 inHg
Wind6 mph W
Humidity18%
Visibility—
Dew point31°
Tue, 1082° / 70°0
82 °
Brea Chem, Tuesday, 10 November
Overcast. High 82°, low 70°.
Pressure29.97 inHg
Wind6.1 mph SW
Humidity23%
Visibility—
Dew point36°
Wed, 1177° / 67°0
77 °
Brea Chem, Wednesday, 11 November
Overcast. High 77°, low 67°.
Pressure29.94 inHg
Wind9.1 mph SW
Humidity45%
Visibility—
Dew point49°
Thu, 1270° / 61°1.67
70 °
Brea Chem, Thursday, 12 November
Heavy rain. High 70°, low 61°.
Pressure29.85 inHg
Wind15.7 mph S
Humidity50%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 1373° / 50°0.04
73 °
Brea Chem, Friday, 13 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.04 in
Chance of precipitation10%
Record high91° (2013)
Record low38° (2000)
Sat, 1472° / 51°0.04
72 °
Brea Chem, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.04 in
Chance of precipitation7%
Record high89° (2021)
Record low37° (1985)
Sun, 1572° / 50°0.06
72 °
Brea Chem, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.06 in
Chance of precipitation8%
Record high88° (2008)
Record low35° (1964)
Mon, 1671° / 50°0.06
71 °
Brea Chem, Monday, 16 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.06 in
Chance of precipitation10%
Record high89° (2020)
Record low35° (1964)
Tue, 1770° / 51°0.04
70 °
Brea Chem, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high70°
Average low51°
Average precipitation0.04 in
Chance of precipitation12%
Record high93° (2019)
Record low38° (1971)
Wed, 1870° / 49°0.06
70 °
Brea Chem, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.06 in
Chance of precipitation18%
Record high87° (2019)
Record low34° (1964)
Thu, 1971° / 49°0.04
71 °
Brea Chem, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.04 in
Chance of precipitation7%
Record high87° (2006)
Record low31° (1964)
Fri, 2070° / 49°0.06
70 °
Brea Chem, Friday, 20 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.06 in
Chance of precipitation13%
Record high85° (2006)
Record low33° (1964)
Sat, 2169° / 49°0.1
69 °
Brea Chem, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high69°
Average low49°
Average precipitation0.1 in
Chance of precipitation22%
Record high88° (2017)
Record low35° (1964)
Sun, 2269° / 49°0.06
69 °
Brea Chem, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high69°
Average low49°
Average precipitation0.06 in
Chance of precipitation12%
Record high94° (2017)
Record low35° (1979)
Mon, 2369° / 48°0.01
69 °
Brea Chem, Monday, 23 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.01 in
Chance of precipitation5%
Record high89° (2017)
Record low38° (2003)
Tue, 2470° / 47°0.04
70 °
Brea Chem, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high70°
Average low47°
Average precipitation0.04 in
Chance of precipitation12%
Record high83° (1977)
Record low38° (1972)
Wed, 2569° / 47°0.06
69 °
Brea Chem, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high69°
Average low47°
Average precipitation0.06 in
Chance of precipitation10%
Record high91° (1977)
Record low36° (2010)
Thu, 2669° / 48°0.07
69 °
Brea Chem, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.07 in
Chance of precipitation13%
Record high87° (1977)
Record low35° (2010)
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 Brea Chem, 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 Brea Chem, 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.