Monthly outlook for Antonio, CA: average high 74.1°, average low 57.6°. That is 2.8° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 16 October (87°), the coolest 13 October (46.7°).
74.1°/57.6°
Average high / low
+2.8°
Above normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
75.5°
69.1°
+3.5°
21 October – 30 October
71.6°
68°
+2°
31 October – 9 November
at normal
66.7°
—
October records over 66 years
104.4°1 October 2020All-time high
41.5°20 October 2021All-time low
Climate normals and records are computed from the nearest reference point — Guadalupe (9 mi).
Mon, 1269° / 56°0.02
69 °
Antonio, Monday, 12 October
Light rain. High 69°, low 56°.
Pressure29.88 inHg
Wind6.1 mph SW
Humidity47%
Visibility6.2 mi
Dew point45°
Tue, 1368° / 47°0
68 °
Antonio, Tuesday, 13 October
Clear. High 68°, low 47°.
Pressure30.03 inHg
Wind7.2 mph NW
Humidity61%
Visibility6.2 mi
Dew point53°
Wed, 1475° / 52°0
75 °
Antonio, Wednesday, 14 October
Clear. High 75°, low 52°.
Pressure30.06 inHg
Wind9.9 mph NW
Humidity40%
Visibility6.2 mi
Dew point48°
Thu, 1579° / 53°0
79 °
Antonio, Thursday, 15 October
Clear. High 79°, low 53°.
Pressure30.03 inHg
Wind10.9 mph NW
Humidity31%
Visibility—
Dew point41°
Fri, 1687° / 58°0
87 °
Antonio, Friday, 16 October
Clear. High 87°, low 58°.
Pressure29.94 inHg
Wind9.7 mph NW
Humidity17%
Visibility—
Dew point34°
Sat, 1786° / 69°0
86 °
Antonio, Saturday, 17 October
Clear. High 86°, low 69°.
Pressure30.03 inHg
Wind12 mph NW
Humidity23%
Visibility—
Dew point42°
Sun, 1883° / 62°0
83 °
Antonio, Sunday, 18 October
Clear. High 83°, low 62°.
Pressure30.00 inHg
Wind8.4 mph W
Humidity31%
Visibility—
Dew point47°
Mon, 1970° / 59°0
70 °
Antonio, Monday, 19 October
Clear. High 70°, low 59°.
Pressure30.00 inHg
Wind14.8 mph NW
Humidity61%
Visibility—
Dew point54°
Tue, 2070° / 58°0
70 °
Antonio, Tuesday, 20 October
Clear. High 70°, low 58°.
Pressure29.97 inHg
Wind9.7 mph NW
Humidity48%
Visibility—
Dew point48°
Wed, 2173° / 58°0
73 °
Antonio, Wednesday, 21 October
Clear. High 73°, low 58°.
Pressure29.94 inHg
Wind9.8 mph W
Humidity48%
Visibility—
Dew point50°
Thu, 2271° / 58°0
71 °
Antonio, Thursday, 22 October
Clear. High 71°, low 58°.
Pressure30.03 inHg
Wind11.1 mph NW
Humidity47%
Visibility—
Dew point48°
Fri, 2370° / 57°0
70 °
Antonio, Friday, 23 October
Clear. High 70°, low 57°.
Pressure30.03 inHg
Wind15.3 mph NW
Humidity36%
Visibility—
Dew point40°
Sat, 2471° / 57°0
71 °
Antonio, Saturday, 24 October
Clear. High 71°, low 57°.
Pressure29.97 inHg
Wind9.2 mph NW
Humidity39%
Visibility—
Dew point43°
Sun, 2570° / 58°0
70 °
Antonio, Sunday, 25 October
Clear. High 70°, low 58°.
Pressure29.94 inHg
Wind8.4 mph NW
Humidity48%
Visibility—
Dew point48°
Mon, 2675° / 59°0
75 °
Antonio, Monday, 26 October
Clear. High 75°, low 59°.
Pressure29.94 inHg
Wind9.4 mph W
Humidity40%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2768° / 55°0.01
68 °
Antonio, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high68°
Average low55°
Average precipitation0.01 in
Chance of precipitation5%
Record high80° (2017)
Record low44° (2020)
Wed, 2867° / 55°0.04
67 °
Antonio, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high67°
Average low55°
Average precipitation0.04 in
Chance of precipitation8%
Record high87° (2021)
Record low43° (2022)
Thu, 2967° / 54°0.04
67 °
Antonio, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high67°
Average low54°
Average precipitation0.04 in
Chance of precipitation12%
Record high82° (2025)
Record low42° (2019)
Fri, 3067° / 54°0.07
67 °
Antonio, Friday, 30 October
Climate normal for this date — 60-year average.
Average high67°
Average low54°
Average precipitation0.07 in
Chance of precipitation13%
Record high83° (1966)
Record low44° (2024)
Sat, 3167° / 54°0.02
67 °
Antonio, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high67°
Average low54°
Average precipitation0.02 in
Chance of precipitation8%
Record high83° (2020)
Record low42° (2024)
Sun, 0169° / 54°0.02
69 °
Antonio, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.02 in
Chance of precipitation8%
Record high85° (2020)
Record low44° (2003)
Mon, 0268° / 54°0.01
68 °
Antonio, Monday, 2 November
Climate normal for this date — 60-year average.
Average high68°
Average low54°
Average precipitation0.01 in
Chance of precipitation5%
Record high85° (1997)
Record low48° (2019)
Tue, 0368° / 54°0.01
68 °
Antonio, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high68°
Average low54°
Average precipitation0.01 in
Chance of precipitation5%
Record high86° (2018)
Record low42° (2022)
Wed, 0467° / 54°0.02
67 °
Antonio, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high67°
Average low54°
Average precipitation0.02 in
Chance of precipitation10%
Record high86° (2020)
Record low40° (2019)
Thu, 0566° / 54°0.02
66 °
Antonio, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high66°
Average low54°
Average precipitation0.02 in
Chance of precipitation8%
Record high94° (2020)
Record low45° (2019)
Fri, 0666° / 54°0.02
66 °
Antonio, Friday, 6 November
Climate normal for this date — 60-year average.
Average high66°
Average low54°
Average precipitation0.02 in
Chance of precipitation7%
Record high79° (1991)
Record low46° (2019)
Sat, 0765° / 53°0.07
65 °
Antonio, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high65°
Average low53°
Average precipitation0.07 in
Chance of precipitation17%
Record high78° (2006)
Record low44° (2018)
Sun, 0865° / 53°0.09
65 °
Antonio, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high65°
Average low53°
Average precipitation0.09 in
Chance of precipitation18%
Record high79° (2025)
Record low40° (2024)
Mon, 0965° / 52°0.06
65 °
Antonio, Monday, 9 November
Climate normal for this date — 60-year average.
Average high65°
Average low52°
Average precipitation0.06 in
Chance of precipitation13%
Record high79° (2019)
Record low37° (2020)
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 Antonio, 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 Antonio, 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.