Monthly outlook for Brea Chem, CA: average high 75.5°, average low 61.2°. That is 2.5° above the climate normal for November. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 10 November (88.5°), the coolest 19 November (56.7°).
75.5°/61.2°
Average high / low
+2.5°
Above normal
3 / 2
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 November – 17 November
79.9°
71.9°
+4.4°
18 November – 27 November
68.2°
69.5°
-0.7°
28 November – 7 December
at normal
67°
—
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).
Mon, 0987° / 69°0
87 °
Brea Chem, Monday, 9 November
Clear. High 87°, low 69°.
Pressure30.00 inHg
Wind1.8 mph SW
Humidity14%
Visibility6.2 mi
Dew point33°
Tue, 1089° / 63°0
89 °
Brea Chem, Tuesday, 10 November
Clear. High 89°, low 63°.
Pressure30.03 inHg
Wind0.6 mph SW
Humidity14%
Visibility6.2 mi
Dew point33°
Wed, 1188° / 61°0
88 °
Brea Chem, Wednesday, 11 November
Clear. High 88°, low 61°.
Pressure30.03 inHg
Wind1.7 mph W
Humidity13%
Visibility6.2 mi
Dew point31°
Thu, 1282° / 59°0
82 °
Brea Chem, Thursday, 12 November
Clear. High 82°, low 59°.
Pressure29.97 inHg
Wind5.1 mph SW
Humidity46%
Visibility—
Dew point50°
Fri, 1385° / 62°0
85 °
Brea Chem, Friday, 13 November
Overcast. High 85°, low 62°.
Pressure29.80 inHg
Wind7 mph SE
Humidity25%
Visibility—
Dew point38°
Sat, 1475° / 68°0.01
75 °
Brea Chem, Saturday, 14 November
Light rain. High 75°, low 68°.
Pressure29.83 inHg
Wind8.9 mph SW
Humidity45%
Visibility—
Dew point50°
Sun, 1571° / 64°0.45
71 °
Brea Chem, Sunday, 15 November
Rain. High 71°, low 64°.
Pressure29.91 inHg
Wind11.5 mph S
Humidity42%
Visibility—
Dew point46°
Mon, 1667° / 58°0.27
67 °
Brea Chem, Monday, 16 November
Rain. High 67°, low 58°.
Pressure30.00 inHg
Wind16.9 mph SW
Humidity49%
Visibility—
Dew point42°
Tue, 1767° / 59°0
67 °
Brea Chem, Tuesday, 17 November
Overcast. High 67°, low 59°.
Pressure30.03 inHg
Wind6.9 mph SW
Humidity40%
Visibility—
Dew point38°
Wed, 1868° / 61°0.11
68 °
Brea Chem, Wednesday, 18 November
Light rain. High 68°, low 61°.
Pressure29.97 inHg
Wind12.8 mph W
Humidity45%
Visibility—
Dew point42°
Thu, 1967° / 57°0
67 °
Brea Chem, Thursday, 19 November
Clear. High 67°, low 57°.
Pressure29.94 inHg
Wind8.9 mph W
Humidity36%
Visibility—
Dew point33°
Fri, 2068° / 57°0
68 °
Brea Chem, Friday, 20 November
Partly cloudy. High 68°, low 57°.
Pressure30.09 inHg
Wind6.9 mph W
Humidity28%
Visibility—
Dew point28°
Sat, 2169° / 59°0
69 °
Brea Chem, Saturday, 21 November
Overcast. High 69°, low 59°.
Pressure30.18 inHg
Wind5.3 mph SW
Humidity14%
Visibility—
Dew point14°
Sun, 2270° / 60°0
70 °
Brea Chem, Sunday, 22 November
Overcast. High 70°, low 60°.
Pressure30.15 inHg
Wind7.1 mph SW
Humidity19%
Visibility—
Dew point22°
Mon, 2368° / 62°0
68 °
Brea Chem, Monday, 23 November
Overcast. High 68°, low 62°.
Pressure30.09 inHg
Wind6.6 mph SW
Humidity55%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.