Monthly outlook for Vacaville, CA: average high 71.9°, average low 51.3°. That is 0° below the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 2 days and 0.9 inches. The warmest day looks like 2 November (78.3°), the coolest 31 October (45.5°).
71.9°/51.3°
Average high / low
−0°
Below normal
1 / 2
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
72.3°
72.9°
-0.4°
31 October – 9 November
71.2°
68.9°
+1.3°
10 November – 19 November
at normal
64°
—
October records over 66 years
104.4°1 October 2020All-time high
40.1°28 October 2023All-time low
Thu, 2267° / 55°0.11
67 °
Vacaville, Thursday, 22 October
Rain. High 67°, low 55°.
Pressure29.91 inHg
Wind5.8 mph SW
Humidity59%
Visibility6.2 mi
Dew point53°
Fri, 2370° / 52°0
70 °
Vacaville, Friday, 23 October
Overcast. High 70°, low 52°.
Pressure30.06 inHg
Wind10.6 mph N
Humidity66%
Visibility6.2 mi
Dew point53°
Sat, 2473° / 53°0
73 °
Vacaville, Saturday, 24 October
Clear. High 73°, low 53°.
Pressure30.03 inHg
Wind7 mph N
Humidity25%
Visibility6.2 mi
Dew point30°
Sun, 2572° / 50°0
72 °
Vacaville, Sunday, 25 October
Partly cloudy. High 72°, low 50°.
Pressure30.09 inHg
Wind4 mph E
Humidity42%
Visibility—
Dew point39°
Mon, 2673° / 51°0
73 °
Vacaville, Monday, 26 October
Mostly clear. High 73°, low 51°.
Pressure30.09 inHg
Wind7.5 mph SW
Humidity38%
Visibility—
Dew point40°
Tue, 2778° / 52°0
78 °
Vacaville, Tuesday, 27 October
Overcast. High 78°, low 52°.
Pressure30.06 inHg
Wind5.4 mph W
Humidity30%
Visibility—
Dew point33°
Wed, 2875° / 54°0
75 °
Vacaville, Wednesday, 28 October
Overcast. High 75°, low 54°.
Pressure29.94 inHg
Wind6.6 mph SW
Humidity29%
Visibility—
Dew point32°
Thu, 2971° / 47°0
71 °
Vacaville, Thursday, 29 October
Clear. High 71°, low 47°.
Pressure29.94 inHg
Wind6.6 mph W
Humidity39%
Visibility—
Dew point37°
Fri, 3075° / 49°0
75 °
Vacaville, Friday, 30 October
Clear. High 75°, low 49°.
Pressure29.94 inHg
Wind9 mph SW
Humidity29%
Visibility—
Dew point32°
Sat, 3168° / 45°0
68 °
Vacaville, Saturday, 31 October
Partly cloudy. High 68°, low 45°.
Pressure29.94 inHg
Wind6.3 mph SW
Humidity42%
Visibility—
Dew point36°
Sun, 0170° / 47°0
70 °
Vacaville, Sunday, 1 November
Clear. High 70°, low 47°.
Pressure30.06 inHg
Wind5.4 mph NE
Humidity34%
Visibility—
Dew point32°
Mon, 0278° / 55°0
78 °
Vacaville, Monday, 2 November
Overcast. High 78°, low 55°.
Pressure30.12 inHg
Wind5.2 mph W
Humidity21%
Visibility—
Dew point27°
Tue, 0369° / 54°0
69 °
Vacaville, Tuesday, 3 November
Overcast. High 69°, low 54°.
Pressure30.09 inHg
Wind5.5 mph NE
Humidity26%
Visibility—
Dew point29°
Wed, 0473° / 51°0
73 °
Vacaville, Wednesday, 4 November
Partly cloudy. High 73°, low 51°.
Pressure30.03 inHg
Wind11 mph SW
Humidity61%
Visibility—
Dew point49°
Thu, 0569° / 48°0
69 °
Vacaville, Thursday, 5 November
Mostly clear. High 69°, low 48°.
Pressure30.03 inHg
Wind9.3 mph W
Humidity43%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0668° / 51°0.07
68 °
Vacaville, Friday, 6 November
Climate normal for this date — 60-year average.
Average high68°
Average low51°
Average precipitation0.07 in
Chance of precipitation15%
Record high82° (1991)
Record low43° (1972)
Sat, 0768° / 50°0.07
68 °
Vacaville, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high68°
Average low50°
Average precipitation0.07 in
Chance of precipitation18%
Record high81° (1991)
Record low41° (1971)
Sun, 0866° / 49°0.06
66 °
Vacaville, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high66°
Average low49°
Average precipitation0.06 in
Chance of precipitation15%
Record high80° (1990)
Record low41° (2021)
Mon, 0966° / 48°0.09
66 °
Vacaville, Monday, 9 November
Climate normal for this date — 60-year average.
Average high66°
Average low48°
Average precipitation0.09 in
Chance of precipitation18%
Record high81° (1990)
Record low39° (1998)
Tue, 1065° / 48°0.14
65 °
Vacaville, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.14 in
Chance of precipitation30%
Record high80° (1990)
Record low37° (2020)
Wed, 1165° / 48°0.1
65 °
Vacaville, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.1 in
Chance of precipitation27%
Record high79° (1990)
Record low37° (2000)
Thu, 1265° / 47°0.07
65 °
Vacaville, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.07 in
Chance of precipitation22%
Record high78° (1990)
Record low35° (1985)
Fri, 1365° / 48°0.14
65 °
Vacaville, Friday, 13 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.14 in
Chance of precipitation30%
Record high81° (1995)
Record low33° (1985)
Sat, 1465° / 47°0.06
65 °
Vacaville, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.06 in
Chance of precipitation18%
Record high80° (2008)
Record low36° (2000)
Sun, 1564° / 48°0.07
64 °
Vacaville, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high64°
Average low48°
Average precipitation0.07 in
Chance of precipitation20%
Record high79° (2010)
Record low35° (1978)
Mon, 1664° / 48°0.08
64 °
Vacaville, Monday, 16 November
Climate normal for this date — 60-year average.
Average high64°
Average low48°
Average precipitation0.08 in
Chance of precipitation27%
Record high77° (1977)
Record low35° (2000)
Tue, 1764° / 47°0.13
64 °
Vacaville, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high64°
Average low47°
Average precipitation0.13 in
Chance of precipitation23%
Record high77° (1989)
Record low36° (1964)
Wed, 1863° / 46°0.07
63 °
Vacaville, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high63°
Average low46°
Average precipitation0.07 in
Chance of precipitation22%
Record high75° (1976)
Record low36° (1985)
Thu, 1962° / 46°0.07
62 °
Vacaville, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.07 in
Chance of precipitation20%
Record high75° (1989)
Record low34° (1964)
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 Vacaville, 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 Vacaville, 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.