Monthly outlook for Collinsville, CA: average high 66.9°, average low 52.8°. That is 0.7° above the climate normal for November. Precipitation is expected on 5 days (about 5.6 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 7 November (74.6°), the coolest 2 November (48.1°).
66.9°/52.8°
Average high / low
+0.7°
Above normal
5 / 3
Wet days / normal
5.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
1 November – 10 November
69.4°
67°
+1.4°
11 November – 20 November
62.7°
62.7°
-0°
21 November – 30 November
at normal
59°
—
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, 0265° / 48°0
65 °
Collinsville, Monday, 2 November
Overcast. High 65°, low 48°.
Pressure30.15 inHg
Wind2 mph SE
Humidity52%
Visibility6.2 mi
Dew point48°
Tue, 0362° / 52°0.19
62 °
Collinsville, Tuesday, 3 November
Rain. High 62°, low 52°.
Pressure30.06 inHg
Wind0.3 mph N
Humidity78%
Visibility5.2 mi
Dew point54°
Wed, 0468° / 49°0
68 °
Collinsville, Wednesday, 4 November
Clear. High 68°, low 49°.
Pressure30.06 inHg
Wind4.8 mph W
Humidity50%
Visibility6.2 mi
Dew point48°
Thu, 0571° / 50°0
71 °
Collinsville, Thursday, 5 November
Clear. High 71°, low 50°.
Pressure30.09 inHg
Wind7.4 mph SW
Humidity65%
Visibility—
Dew point49°
Fri, 0667° / 52°0
67 °
Collinsville, Friday, 6 November
Overcast. High 67°, low 52°.
Pressure30.18 inHg
Wind8 mph SW
Humidity75%
Visibility—
Dew point50°
Sat, 0775° / 54°0
75 °
Collinsville, Saturday, 7 November
Mostly clear. High 75°, low 54°.
Pressure30.06 inHg
Wind4.1 mph NE
Humidity35%
Visibility—
Dew point35°
Sun, 0874° / 55°0
74 °
Collinsville, Sunday, 8 November
Mostly clear. High 74°, low 55°.
Pressure30.03 inHg
Wind4 mph NE
Humidity36%
Visibility—
Dew point37°
Mon, 0974° / 56°0
74 °
Collinsville, Monday, 9 November
Partly cloudy. High 74°, low 56°.
Pressure30.06 inHg
Wind6.1 mph NW
Humidity34%
Visibility—
Dew point37°
Tue, 1074° / 58°0
74 °
Collinsville, Tuesday, 10 November
Clear. High 74°, low 58°.
Pressure30.15 inHg
Wind7.6 mph NW
Humidity47%
Visibility—
Dew point45°
Wed, 1173° / 57°0
73 °
Collinsville, Wednesday, 11 November
Overcast. High 73°, low 57°.
Pressure30.15 inHg
Wind4 mph SW
Humidity53%
Visibility—
Dew point47°
Thu, 1263° / 55°0.62
63 °
Collinsville, Thursday, 12 November
Rain. High 63°, low 55°.
Pressure29.83 inHg
Wind10.9 mph S
Humidity78%
Visibility—
Dew point55°
Fri, 1360° / 53°1.57
60 °
Collinsville, Friday, 13 November
Heavy rain. High 60°, low 53°.
Pressure29.77 inHg
Wind16.8 mph SE
Humidity61%
Visibility—
Dew point46°
Sat, 1462° / 54°2.89
62 °
Collinsville, Saturday, 14 November
Heavy rain. High 62°, low 54°.
Pressure29.50 inHg
Wind27.6 mph S
Humidity68%
Visibility—
Dew point49°
Sun, 1559° / 52°0.28
59 °
Collinsville, Sunday, 15 November
Light rain. High 59°, low 52°.
Pressure29.91 inHg
Wind13.1 mph W
Humidity70%
Visibility—
Dew point48°
Mon, 1659° / 50°0.02
59 °
Collinsville, Monday, 16 November
Light rain. High 59°, low 50°.
Pressure30.15 inHg
Wind5.1 mph SE
Humidity78%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1763° / 49°0.13
63 °
Collinsville, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high63°
Average low49°
Average precipitation0.13 in
Chance of precipitation25%
Record high75° (1989)
Record low37° (1964)
Wed, 1862° / 47°0.06
62 °
Collinsville, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.06 in
Chance of precipitation15%
Record high73° (2019)
Record low36° (1964)
Thu, 1961° / 47°0.06
61 °
Collinsville, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high61°
Average low47°
Average precipitation0.06 in
Chance of precipitation23%
Record high71° (1989)
Record low35° (1994)
Fri, 2061° / 47°0.09
61 °
Collinsville, Friday, 20 November
Climate normal for this date — 60-year average.
Average high61°
Average low47°
Average precipitation0.09 in
Chance of precipitation28%
Record high71° (2015)
Record low38° (1994)
Sat, 2160° / 46°0.11
60 °
Collinsville, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.11 in
Chance of precipitation25%
Record high70° (1962)
Record low35° (1985)
Sun, 2260° / 46°0.08
60 °
Collinsville, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.08 in
Chance of precipitation27%
Record high68° (2005)
Record low36° (1985)
Mon, 2360° / 46°0.05
60 °
Collinsville, Monday, 23 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.05 in
Chance of precipitation18%
Record high73° (1995)
Record low38° (1973)
Tue, 2460° / 46°0.08
60 °
Collinsville, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.08 in
Chance of precipitation18%
Record high73° (1995)
Record low34° (2010)
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)
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.