Monthly outlook for Colusa, CA: average high 75°, average low 54.3°. That is 0.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 18 October (83.2°), the coolest 19 October (46.6°).
75°/54.3°
Average high / low
+0.4°
Above normal
3 / 2
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
75°
76.2°
-0.6°
28 October – 6 November
75°
70.7°
+2.4°
7 November – 16 November
at normal
65.4°
—
October records over 66 years
106.5°1 October 2020All-time high
36.5°27 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Williams (8 mi).
Mon, 1971° / 47°0.01
71 °
Colusa, Monday, 19 October
Light rain. High 71°, low 47°.
Pressure29.94 inHg
Wind2.4 mph SW
Humidity55%
Visibility6.2 mi
Dew point47°
Tue, 2067° / 52°0.09
67 °
Colusa, Tuesday, 20 October
Light rain. High 67°, low 52°.
Pressure29.91 inHg
Wind1.1 mph N
Humidity48%
Visibility6.2 mi
Dew point42°
Wed, 2175° / 56°0.17
75 °
Colusa, Wednesday, 21 October
Rain. High 75°, low 56°.
Pressure29.85 inHg
Wind1.3 mph N
Humidity45%
Visibility6.2 mi
Dew point48°
Thu, 2274° / 53°0
74 °
Colusa, Thursday, 22 October
Partly cloudy. High 74°, low 53°.
Pressure29.97 inHg
Wind4.5 mph SE
Humidity66%
Visibility—
Dew point50°
Fri, 2376° / 53°0
76 °
Colusa, Friday, 23 October
Clear. High 76°, low 53°.
Pressure30.09 inHg
Wind6 mph N
Humidity65%
Visibility—
Dew point51°
Sat, 2475° / 54°0
75 °
Colusa, Saturday, 24 October
Clear. High 75°, low 54°.
Pressure30.15 inHg
Wind7.9 mph N
Humidity25%
Visibility—
Dew point27°
Sun, 2578° / 55°0
78 °
Colusa, Sunday, 25 October
Clear. High 78°, low 55°.
Pressure30.03 inHg
Wind7.6 mph N
Humidity24%
Visibility—
Dew point28°
Mon, 2677° / 56°0
77 °
Colusa, Monday, 26 October
Overcast. High 77°, low 56°.
Pressure29.91 inHg
Wind6.4 mph N
Humidity23%
Visibility—
Dew point28°
Tue, 2775° / 57°0
75 °
Colusa, Tuesday, 27 October
Overcast. High 75°, low 57°.
Pressure29.97 inHg
Wind5.7 mph N
Humidity25%
Visibility—
Dew point29°
Wed, 2877° / 56°0
77 °
Colusa, Wednesday, 28 October
Mostly clear. High 77°, low 56°.
Pressure30.06 inHg
Wind6.1 mph N
Humidity26%
Visibility—
Dew point31°
Thu, 2976° / 55°0
76 °
Colusa, Thursday, 29 October
Overcast. High 76°, low 55°.
Pressure30.00 inHg
Wind4.7 mph N
Humidity27%
Visibility—
Dew point30°
Fri, 3077° / 54°0
77 °
Colusa, Friday, 30 October
Clear. High 77°, low 54°.
Pressure29.91 inHg
Wind5.5 mph N
Humidity25%
Visibility—
Dew point29°
Sat, 3177° / 54°0
77 °
Colusa, Saturday, 31 October
Clear. High 77°, low 54°.
Pressure29.97 inHg
Wind6 mph SE
Humidity23%
Visibility—
Dew point27°
Sun, 0177° / 55°0
77 °
Colusa, Sunday, 1 November
Overcast. High 77°, low 55°.
Pressure30.06 inHg
Wind10 mph S
Humidity31%
Visibility—
Dew point34°
Mon, 0266° / 59°0.05
66 °
Colusa, Monday, 2 November
Light rain. High 66°, low 59°.
Pressure30.12 inHg
Wind8 mph SE
Humidity78%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0371° / 51°0.04
71 °
Colusa, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.04 in
Chance of precipitation10%
Record high88° (2018)
Record low38° (2022)
Wed, 0471° / 50°0.03
71 °
Colusa, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high82° (1976)
Record low38° (1973)
Thu, 0570° / 50°0.07
70 °
Colusa, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high70°
Average low50°
Average precipitation0.07 in
Chance of precipitation15%
Record high84° (2020)
Record low39° (2017)
Fri, 0669° / 51°0.04
69 °
Colusa, Friday, 6 November
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.04 in
Chance of precipitation15%
Record high83° (1991)
Record low41° (1998)
Sat, 0768° / 49°0.09
68 °
Colusa, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high68°
Average low49°
Average precipitation0.09 in
Chance of precipitation22%
Record high82° (1991)
Record low38° (2017)
Sun, 0867° / 48°0.09
67 °
Colusa, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high67°
Average low48°
Average precipitation0.09 in
Chance of precipitation20%
Record high81° (2019)
Record low40° (2024)
Mon, 0966° / 47°0.11
66 °
Colusa, Monday, 9 November
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.11 in
Chance of precipitation23%
Record high81° (1990)
Record low36° (1998)
Tue, 1065° / 47°0.13
65 °
Colusa, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.13 in
Chance of precipitation33%
Record high81° (1990)
Record low31° (2020)
Wed, 1165° / 47°0.13
65 °
Colusa, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.13 in
Chance of precipitation25%
Record high85° (2019)
Record low35° (2000)
Thu, 1265° / 47°0.07
65 °
Colusa, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.07 in
Chance of precipitation20%
Record high78° (1990)
Record low34° (1978)
Fri, 1365° / 48°0.14
65 °
Colusa, Friday, 13 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.14 in
Chance of precipitation33%
Record high81° (1995)
Record low29° (1985)
Sat, 1465° / 47°0.06
65 °
Colusa, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.06 in
Chance of precipitation20%
Record high79° (1995)
Record low31° (2018)
Sun, 1564° / 47°0.07
64 °
Colusa, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high64°
Average low47°
Average precipitation0.07 in
Chance of precipitation20%
Record high78° (2008)
Record low32° (2018)
Mon, 1664° / 47°0.12
64 °
Colusa, Monday, 16 November
Climate normal for this date — 60-year average.
Average high64°
Average low47°
Average precipitation0.12 in
Chance of precipitation25%
Record high79° (2019)
Record low34° (2000)
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 Colusa, 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 Colusa, 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.