Monthly outlook for Collinsville, CA: average high 57.3°, average low 47.9°. That is 1.6° below the climate normal for November. Precipitation is expected on 10 days (about 4.2 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 15 November (62.9°), the coolest 20 November (42.8°).
57.3°/47.9°
Average high / low
−1.6°
Below normal
10 / 4
Wet days / normal
4.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 November – 24 November
57.4°
61.3°
-2.2°
25 November – 4 December
57.2°
58.2°
-0.5°
5 December – 14 December
at normal
56.3°
—
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).
Mon, 1661° / 49°0.12
61 °
Collinsville, Monday, 16 November
Light rain. High 61°, low 49°.
Pressure30.09 inHg
Wind9.3 mph W
Humidity54%
Visibility6.2 mi
Dew point44°
Tue, 1760° / 44°0
60 °
Collinsville, Tuesday, 17 November
Light rain. High 60°, low 44°.
Pressure30.09 inHg
Wind2.1 mph SW
Humidity62%
Visibility3.7 mi
Dew point45°
Wed, 1857° / 48°1.12
57 °
Collinsville, Wednesday, 18 November
Heavy rain. High 57°, low 48°.
Pressure29.94 inHg
Wind6.1 mph SE
Humidity86%
Visibility6.2 mi
Dew point50°
Thu, 1950° / 47°0.62
50 °
Collinsville, Thursday, 19 November
Rain. High 50°, low 47°.
Pressure29.80 inHg
Wind12.7 mph N
Humidity96%
Visibility3.4 mi
Dew point48°
Fri, 2059° / 43°0
59 °
Collinsville, Friday, 20 November
Clear. High 59°, low 43°.
Pressure30.12 inHg
Wind6.9 mph SW
Humidity74%
Visibility—
Dew point44°
Sat, 2153° / 47°0.4
53 °
Collinsville, Saturday, 21 November
Rain. High 53°, low 47°.
Pressure29.88 inHg
Wind14.6 mph SE
Humidity77%
Visibility—
Dew point44°
Sun, 2257° / 47°0.09
57 °
Collinsville, Sunday, 22 November
Light rain. High 57°, low 47°.
Pressure30.09 inHg
Wind3.7 mph SW
Humidity67%
Visibility—
Dew point42°
Mon, 2352° / 48°0.13
52 °
Collinsville, Monday, 23 November
Light rain. High 52°, low 48°.
Pressure30.15 inHg
Wind17.5 mph SE
Humidity80%
Visibility—
Dew point43°
Tue, 2461° / 52°1.12
61 °
Collinsville, Tuesday, 24 November
Heavy rain. High 61°, low 52°.
Pressure29.88 inHg
Wind20.1 mph S
Humidity83%
Visibility—
Dew point55°
Wed, 2560° / 51°0.04
60 °
Collinsville, Wednesday, 25 November
Light rain. High 60°, low 51°.
Pressure30.27 inHg
Wind5.5 mph SW
Humidity75%
Visibility—
Dew point47°
Thu, 2658° / 52°0
58 °
Collinsville, Thursday, 26 November
Overcast. High 58°, low 52°.
Pressure30.33 inHg
Wind4.9 mph N
Humidity78%
Visibility—
Dew point49°
Fri, 2758° / 52°0.36
58 °
Collinsville, Friday, 27 November
Rain. High 58°, low 52°.
Pressure29.97 inHg
Wind10.5 mph W
Humidity85%
Visibility—
Dew point51°
Sat, 2859° / 47°0
59 °
Collinsville, Saturday, 28 November
Clear. High 59°, low 47°.
Pressure30.18 inHg
Wind9.2 mph N
Humidity67%
Visibility—
Dew point43°
Sun, 2954° / 43°0
54 °
Collinsville, Sunday, 29 November
Partly cloudy. High 54°, low 43°.
Pressure30.27 inHg
Wind5.4 mph NE
Humidity64%
Visibility—
Dew point36°
Mon, 3055° / 43°0
55 °
Collinsville, Monday, 30 November
Mostly clear. High 55°, low 43°.
Pressure30.21 inHg
Wind4 mph N
Humidity61%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 0956° / 44°0.07
56 °
Collinsville, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.07 in
Chance of precipitation25%
Record high67° (1990)
Record low24° (1972)
Thu, 1056° / 43°0.11
56 °
Collinsville, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.11 in
Chance of precipitation25%
Record high66° (2020)
Record low26° (1972)
Fri, 1155° / 43°0.11
55 °
Collinsville, Friday, 11 December
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.11 in
Chance of precipitation30%
Record high63° (1996)
Record low27° (1972)
Sat, 1255° / 43°0.14
55 °
Collinsville, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.14 in
Chance of precipitation30%
Record high62° (1996)
Record low32° (1972)
Sun, 1355° / 43°0.09
55 °
Collinsville, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.09 in
Chance of precipitation23%
Record high64° (1988)
Record low28° (1972)
Mon, 1455° / 42°0.12
55 °
Collinsville, Monday, 14 December
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.12 in
Chance of precipitation23%
Record high65° (1962)
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.