Monthly outlook for Brea Chem, CA: average high 69.6°, average low 58.2°. That is 0.3° below the climate normal for November. Precipitation is expected on 7 days (about 1.1 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 22 November (74.4°), the coolest 18 November (45.6°).
69.6°/58.2°
Average high / low
−0.3°
Below normal
7 / 2
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 November – 22 November
68.1°
70.6°
-1.4°
23 November – 2 December
72.1°
68.3°
+2.1°
3 December – 12 December
at normal
66.2°
—
November records over 66 years
97.2°5 November 2020All-time high
31.5°19 November 1964All-time low
Climate normals and records are computed from the nearest reference point — Placentia (3 mi).
Sat, 1470° / 57°0.11
70 °
Brea Chem, Saturday, 14 November
Rain. High 70°, low 57°.
Pressure29.91 inHg
Wind3.8 mph S
Humidity57%
Visibility6.2 mi
Dew point52°
Sun, 1570° / 54°0
70 °
Brea Chem, Sunday, 15 November
Clear. High 70°, low 54°.
Pressure30.06 inHg
Wind2.1 mph W
Humidity53%
Visibility6.2 mi
Dew point51°
Mon, 1668° / 57°0.07
68 °
Brea Chem, Monday, 16 November
Light rain. High 68°, low 57°.
Pressure30.00 inHg
Wind4.1 mph W
Humidity61%
Visibility6.2 mi
Dew point54°
Tue, 1763° / 50°0.05
63 °
Brea Chem, Tuesday, 17 November
Light rain. High 63°, low 50°.
Pressure29.94 inHg
Wind10.4 mph W
Humidity38%
Visibility6.2 mi
Dew point35°
Wed, 1863° / 46°0.24
63 °
Brea Chem, Wednesday, 18 November
Rain. High 63°, low 46°.
Pressure30.15 inHg
Wind6 mph E
Humidity46%
Visibility—
Dew point37°
Thu, 1967° / 52°0.32
67 °
Brea Chem, Thursday, 19 November
Rain. High 67°, low 52°.
Pressure30.06 inHg
Wind11.2 mph W
Humidity55%
Visibility—
Dew point45°
Fri, 2067° / 61°0.09
67 °
Brea Chem, Friday, 20 November
Light rain. High 67°, low 61°.
Pressure30.03 inHg
Wind6.6 mph E
Humidity61%
Visibility—
Dew point51°
Sat, 2173° / 61°0
73 °
Brea Chem, Saturday, 21 November
Overcast. High 73°, low 61°.
Pressure30.06 inHg
Wind5.1 mph SW
Humidity32%
Visibility—
Dew point35°
Sun, 2274° / 62°0
74 °
Brea Chem, Sunday, 22 November
Clear. High 74°, low 62°.
Pressure30.09 inHg
Wind4.4 mph SW
Humidity18%
Visibility—
Dew point23°
Mon, 2372° / 62°0
72 °
Brea Chem, Monday, 23 November
Overcast. High 72°, low 62°.
Pressure30.09 inHg
Wind11.1 mph W
Humidity57%
Visibility—
Dew point50°
Tue, 2472° / 61°0
72 °
Brea Chem, Tuesday, 24 November
Overcast. High 72°, low 61°.
Pressure30.09 inHg
Wind5.1 mph W
Humidity56%
Visibility—
Dew point50°
Wed, 2574° / 64°0
74 °
Brea Chem, Wednesday, 25 November
Overcast. High 74°, low 64°.
Pressure30.15 inHg
Wind10.3 mph SW
Humidity26%
Visibility—
Dew point33°
Thu, 2671° / 64°0
71 °
Brea Chem, Thursday, 26 November
Partly cloudy. High 71°, low 64°.
Pressure30.18 inHg
Wind8.7 mph SW
Humidity57%
Visibility—
Dew point52°
Fri, 2771° / 60°0
71 °
Brea Chem, Friday, 27 November
Overcast. High 71°, low 60°.
Pressure30.12 inHg
Wind3.8 mph SW
Humidity47%
Visibility—
Dew point44°
Sat, 2872° / 62°0
72 °
Brea Chem, Saturday, 28 November
Overcast. High 72°, low 62°.
Pressure30.06 inHg
Wind4.9 mph SW
Humidity19%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2967° / 46°0.13
67 °
Brea Chem, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.13 in
Chance of precipitation18%
Record high83° (1977)
Record low34° (2010)
Mon, 3067° / 46°0.07
67 °
Brea Chem, Monday, 30 November
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.07 in
Chance of precipitation22%
Record high83° (1977)
Record low34° (2004)
Tue, 0167° / 45°0.02
67 °
Brea Chem, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high67°
Average low45°
Average precipitation0.02 in
Chance of precipitation7%
Record high80° (1977)
Record low33° (2004)
Wed, 0267° / 45°0.04
67 °
Brea Chem, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high67°
Average low45°
Average precipitation0.04 in
Chance of precipitation13%
Record high79° (1977)
Record low34° (2004)
Thu, 0367° / 46°0.09
67 °
Brea Chem, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.09 in
Chance of precipitation13%
Record high80° (1979)
Record low35° (2004)
Fri, 0467° / 46°0.1
67 °
Brea Chem, Friday, 4 December
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.1 in
Chance of precipitation18%
Record high84° (1979)
Record low34° (2011)
Sat, 0567° / 46°0.08
67 °
Brea Chem, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.08 in
Chance of precipitation18%
Record high86° (1979)
Record low36° (1983)
Sun, 0667° / 46°0.14
67 °
Brea Chem, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.14 in
Chance of precipitation15%
Record high83° (1979)
Record low34° (2011)
Mon, 0766° / 47°0.13
66 °
Brea Chem, Monday, 7 December
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.13 in
Chance of precipitation27%
Record high80° (2024)
Record low30° (1978)
Tue, 0866° / 45°0.03
66 °
Brea Chem, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high66°
Average low45°
Average precipitation0.03 in
Chance of precipitation18%
Record high83° (1975)
Record low28° (1978)
Wed, 0966° / 45°0.03
66 °
Brea Chem, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high66°
Average low45°
Average precipitation0.03 in
Chance of precipitation12%
Record high84° (2017)
Record low31° (1978)
Thu, 1066° / 45°0.03
66 °
Brea Chem, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high66°
Average low45°
Average precipitation0.03 in
Chance of precipitation8%
Record high85° (2017)
Record low33° (1998)
Fri, 1165° / 46°0.07
65 °
Brea Chem, Friday, 11 December
Climate normal for this date — 60-year average.
Average high65°
Average low46°
Average precipitation0.07 in
Chance of precipitation18%
Record high81° (2017)
Record low33° (1972)
Sat, 1264° / 44°0.06
64 °
Brea Chem, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high64°
Average low44°
Average precipitation0.06 in
Chance of precipitation13%
Record high84° (2017)
Record low29° (1972)
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.