Monthly outlook for Brea Chem, CA: average high 69.3°, average low 57.5°. That is 0.7° below the climate normal for November. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 11 November (83.7°), the coolest 17 November (47°).
69.3°/57.5°
Average high / low
−0.7°
Below normal
6 / 2
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 November – 20 November
69.8°
71.3°
-0.8°
21 November – 30 November
68.5°
68.6°
-0°
1 December – 10 December
at normal
66.7°
—
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).
Thu, 1280° / 58°0
80 °
Brea Chem, Thursday, 12 November
Light rain. High 80°, low 58°.
Pressure29.88 inHg
Wind4.1 mph S
Humidity39%
Visibility6.2 mi
Dew point52°
Fri, 1368° / 56°0.13
68 °
Brea Chem, Friday, 13 November
Rain. High 68°, low 56°.
Pressure29.83 inHg
Wind3.1 mph SW
Humidity60%
Visibility6.2 mi
Dew point53°
Sat, 1470° / 59°0.19
70 °
Brea Chem, Saturday, 14 November
Rain. High 70°, low 59°.
Pressure29.91 inHg
Wind3.7 mph S
Humidity55%
Visibility6.2 mi
Dew point52°
Sun, 1570° / 55°0
70 °
Brea Chem, Sunday, 15 November
Partly cloudy. High 70°, low 55°.
Pressure30.03 inHg
Wind1.4 mph SW
Humidity53%
Visibility6.2 mi
Dew point51°
Mon, 1665° / 55°0.16
65 °
Brea Chem, Monday, 16 November
Light rain. High 65°, low 55°.
Pressure30.00 inHg
Wind4 mph SW
Humidity81%
Visibility—
Dew point56°
Tue, 1764° / 47°0.04
64 °
Brea Chem, Tuesday, 17 November
Light rain. High 64°, low 47°.
Pressure29.97 inHg
Wind8.4 mph SW
Humidity54%
Visibility—
Dew point40°
Wed, 1868° / 60°0.02
68 °
Brea Chem, Wednesday, 18 November
Light rain. High 68°, low 60°.
Pressure29.97 inHg
Wind9 mph S
Humidity50%
Visibility—
Dew point46°
Thu, 1966° / 61°0.2
66 °
Brea Chem, Thursday, 19 November
Rain. High 66°, low 61°.
Pressure30.06 inHg
Wind7 mph SW
Humidity53%
Visibility—
Dew point47°
Fri, 2063° / 59°0.44
63 °
Brea Chem, Friday, 20 November
Rain. High 63°, low 59°.
Pressure30.03 inHg
Wind10.9 mph W
Humidity59%
Visibility—
Dew point48°
Sat, 2166° / 57°0
66 °
Brea Chem, Saturday, 21 November
Clear. High 66°, low 57°.
Pressure30.06 inHg
Wind7.4 mph SW
Humidity50%
Visibility—
Dew point44°
Sun, 2267° / 59°0
67 °
Brea Chem, Sunday, 22 November
Overcast. High 67°, low 59°.
Pressure30.06 inHg
Wind6.6 mph W
Humidity49%
Visibility—
Dew point42°
Mon, 2369° / 58°0
69 °
Brea Chem, Monday, 23 November
Clear. High 69°, low 58°.
Pressure30.09 inHg
Wind7.2 mph SW
Humidity23%
Visibility—
Dew point25°
Tue, 2468° / 58°0
68 °
Brea Chem, Tuesday, 24 November
Overcast. High 68°, low 58°.
Pressure30.03 inHg
Wind4.1 mph SW
Humidity22%
Visibility—
Dew point24°
Wed, 2569° / 60°0
69 °
Brea Chem, Wednesday, 25 November
Overcast. High 69°, low 60°.
Pressure30.03 inHg
Wind5.9 mph SW
Humidity31%
Visibility—
Dew point33°
Thu, 2672° / 60°0
72 °
Brea Chem, Thursday, 26 November
Clear. High 72°, low 60°.
Pressure30.15 inHg
Wind4.6 mph W
Humidity42%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2768° / 47°0.04
68 °
Brea Chem, Friday, 27 November
Climate normal for this date — 60-year average.
Average high68°
Average low47°
Average precipitation0.04 in
Chance of precipitation12%
Record high88° (2014)
Record low35° (1994)
Sat, 2868° / 46°0.09
68 °
Brea Chem, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high68°
Average low46°
Average precipitation0.09 in
Chance of precipitation18%
Record high86° (1977)
Record low35° (1976)
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)
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.