Monthly outlook for Collinsville, CA: average high 63.7°, average low 49.4°. That is 0.8° above the climate normal for November. Precipitation is expected on 5 days (about 4.0 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 10 November (77°), the coolest 19 November (44.7°).
63.7°/49.4°
Average high / low
+0.8°
Above normal
5 / 4
Wet days / normal
4.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 November – 18 November
67.6°
63.4°
+2.3°
19 November – 28 November
57.2°
59.6°
-1.3°
29 November – 8 December
at normal
57.7°
—
November records over 66 years
83.1°3 November 2018All-time high
33.6°29 November 1975All-time low
Climate normals and records are computed from the nearest reference point — Antioch (7 mi).
Tue, 1077° / 51°0
77 °
Collinsville, Tuesday, 10 November
Clear. High 77°, low 51°.
Pressure30.15 inHg
Wind2.1 mph W
Humidity50%
Visibility5.7 mi
Dew point52°
Wed, 1173° / 53°0
73 °
Collinsville, Wednesday, 11 November
Partly cloudy. High 73°, low 53°.
Pressure30.06 inHg
Wind3.9 mph NE
Humidity60%
Visibility6.2 mi
Dew point53°
Thu, 1273° / 49°0
73 °
Collinsville, Thursday, 12 November
Partly cloudy. High 73°, low 49°.
Pressure29.85 inHg
Wind2.8 mph NW
Humidity42%
Visibility6.2 mi
Dew point47°
Fri, 1369° / 56°0.4
69 °
Collinsville, Friday, 13 November
Rain. High 69°, low 56°.
Pressure29.74 inHg
Wind16.5 mph SW
Humidity64%
Visibility—
Dew point54°
Sat, 1464° / 51°0
64 °
Collinsville, Saturday, 14 November
Partly cloudy. High 64°, low 51°.
Pressure29.91 inHg
Wind6.9 mph SW
Humidity72%
Visibility—
Dew point49°
Sun, 1561° / 53°0.12
61 °
Collinsville, Sunday, 15 November
Light rain. High 61°, low 53°.
Pressure29.88 inHg
Wind12.3 mph W
Humidity79%
Visibility—
Dew point53°
Mon, 1662° / 49°0
62 °
Collinsville, Monday, 16 November
Partly cloudy. High 62°, low 49°.
Pressure30.15 inHg
Wind9.3 mph W
Humidity53%
Visibility—
Dew point38°
Tue, 1761° / 46°0
61 °
Collinsville, Tuesday, 17 November
Clear. High 61°, low 46°.
Pressure30.00 inHg
Wind13.4 mph NW
Humidity36%
Visibility—
Dew point28°
Wed, 1861° / 46°0
61 °
Collinsville, Wednesday, 18 November
Clear. High 61°, low 46°.
Pressure30.09 inHg
Wind8.3 mph NW
Humidity31%
Visibility—
Dew point24°
Thu, 1961° / 45°0
61 °
Collinsville, Thursday, 19 November
Clear. High 61°, low 45°.
Pressure30.21 inHg
Wind7.8 mph SW
Humidity31%
Visibility—
Dew point23°
Fri, 2059° / 46°0
59 °
Collinsville, Friday, 20 November
Partly cloudy. High 59°, low 46°.
Pressure30.18 inHg
Wind6.1 mph NW
Humidity48%
Visibility—
Dew point34°
Sat, 2151° / 45°0.06
51 °
Collinsville, Saturday, 21 November
Light rain. High 51°, low 45°.
Pressure30.21 inHg
Wind6.2 mph NE
Humidity52%
Visibility—
Dew point34°
Sun, 2256° / 46°0.02
56 °
Collinsville, Sunday, 22 November
Light rain. High 56°, low 46°.
Pressure30.09 inHg
Wind6.8 mph NE
Humidity80%
Visibility—
Dew point44°
Mon, 2354° / 49°0.85
54 °
Collinsville, Monday, 23 November
Rain. High 54°, low 49°.
Pressure29.97 inHg
Wind15 mph SE
Humidity77%
Visibility—
Dew point43°
Tue, 2462° / 54°2.56
62 °
Collinsville, Tuesday, 24 November
Heavy rain. High 62°, low 54°.
Pressure29.65 inHg
Wind18.2 mph SE
Humidity84%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2559° / 45°0.05
59 °
Collinsville, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high59°
Average low45°
Average precipitation0.05 in
Chance of precipitation18%
Record high73° (1995)
Record low36° (2010)
Thu, 2659° / 44°0.06
59 °
Collinsville, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (2002)
Record low36° (2015)
Fri, 2758° / 45°0.06
58 °
Collinsville, Friday, 27 November
Climate normal for this date — 60-year average.
Average high58°
Average low45°
Average precipitation0.06 in
Chance of precipitation23%
Record high71° (1986)
Record low35° (2015)
Sat, 2858° / 44°0.11
58 °
Collinsville, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.11 in
Chance of precipitation25%
Record high69° (1995)
Record low36° (2015)
Sun, 2958° / 44°0.11
58 °
Collinsville, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.11 in
Chance of precipitation22%
Record high72° (1995)
Record low34° (1975)
Mon, 3057° / 44°0.13
57 °
Collinsville, Monday, 30 November
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.13 in
Chance of precipitation25%
Record high71° (1977)
Record low36° (2010)
Tue, 0158° / 45°0.1
58 °
Collinsville, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high58°
Average low45°
Average precipitation0.1 in
Chance of precipitation25%
Record high66° (1977)
Record low38° (2007)
Wed, 0258° / 44°0.15
58 °
Collinsville, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.15 in
Chance of precipitation25%
Record high69° (2011)
Record low33° (2022)
Thu, 0358° / 44°0.12
58 °
Collinsville, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.12 in
Chance of precipitation28%
Record high68° (1979)
Record low37° (2022)
Fri, 0458° / 44°0.08
58 °
Collinsville, Friday, 4 December
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.08 in
Chance of precipitation22%
Record high67° (1979)
Record low34° (1971)
Sat, 0558° / 44°0.08
58 °
Collinsville, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.08 in
Chance of precipitation22%
Record high68° (1979)
Record low32° (1972)
Sun, 0658° / 44°0.07
58 °
Collinsville, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.07 in
Chance of precipitation25%
Record high68° (1979)
Record low32° (2013)
Mon, 0758° / 44°0.08
58 °
Collinsville, Monday, 7 December
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.08 in
Chance of precipitation30%
Record high69° (2020)
Record low33° (1978)
Tue, 0856° / 43°0.06
56 °
Collinsville, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.06 in
Chance of precipitation15%
Record high67° (1979)
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 Collinsville, 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 Collinsville, 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.