Monthly outlook for Atlas, CA: average high 65.6°, average low 45.4°. That is 4.6° below the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 2 days and 1.1 inches. The warmest day looks like 17 October (81.3°), the coolest 19 October (33.4°).
65.6°/45.4°
Average high / low
−4.6°
Below normal
5 / 2
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
70.1°
75.5°
-3°
27 October – 5 November
58.1°
71°
-7.1°
6 November – 15 November
at normal
66°
—
October records over 66 years
106°1 October 2020All-time high
39.7°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — St. Helena (13 mi).
Sun, 1872° / 39°0
72 °
Atlas, Sunday, 18 October
Clear. High 72°, low 39°.
Pressure29.97 inHg
Wind4.3 mph SW
Humidity24%
Visibility6.2 mi
Dew point39°
Mon, 1965° / 33°0.01
65 °
Atlas, Monday, 19 October
Light rain. High 65°, low 33°.
Pressure29.94 inHg
Wind6.3 mph SW
Humidity50%
Visibility6.2 mi
Dew point42°
Tue, 2063° / 48°0.06
63 °
Atlas, Tuesday, 20 October
Light rain. High 63°, low 48°.
Pressure29.88 inHg
Wind1.8 mph E
Humidity65%
Visibility6.2 mi
Dew point47°
Wed, 2167° / 52°0.52
67 °
Atlas, Wednesday, 21 October
Rain. High 67°, low 52°.
Pressure29.94 inHg
Wind1.1 mph SW
Humidity64%
Visibility6.2 mi
Dew point50°
Thu, 2271° / 51°0
71 °
Atlas, Thursday, 22 October
Clear. High 71°, low 51°.
Pressure30.00 inHg
Wind4.8 mph N
Humidity60%
Visibility—
Dew point48°
Fri, 2369° / 49°0
69 °
Atlas, Friday, 23 October
Clear. High 69°, low 49°.
Pressure30.03 inHg
Wind6.9 mph SW
Humidity53%
Visibility—
Dew point44°
Sat, 2470° / 46°0
70 °
Atlas, Saturday, 24 October
Clear. High 70°, low 46°.
Pressure30.03 inHg
Wind4.4 mph S
Humidity48%
Visibility—
Dew point41°
Sun, 2569° / 50°0
69 °
Atlas, Sunday, 25 October
Overcast. High 69°, low 50°.
Pressure29.94 inHg
Wind3 mph NE
Humidity49%
Visibility—
Dew point42°
Mon, 2675° / 54°0
75 °
Atlas, Monday, 26 October
Overcast. High 75°, low 54°.
Pressure29.77 inHg
Wind3.8 mph SW
Humidity32%
Visibility—
Dew point35°
Tue, 2766° / 47°0
66 °
Atlas, Tuesday, 27 October
Overcast. High 66°, low 47°.
Pressure29.80 inHg
Wind10.7 mph SW
Humidity57%
Visibility—
Dew point43°
Wed, 2857° / 44°0.08
57 °
Atlas, Wednesday, 28 October
Light rain. High 57°, low 44°.
Pressure30.06 inHg
Wind13.6 mph S
Humidity70%
Visibility—
Dew point46°
Thu, 2958° / 40°0
58 °
Atlas, Thursday, 29 October
Partly cloudy. High 58°, low 40°.
Pressure30.09 inHg
Wind9.1 mph W
Humidity56%
Visibility—
Dew point35°
Fri, 3053° / 44°0.32
53 °
Atlas, Friday, 30 October
Rain. High 53°, low 44°.
Pressure30.03 inHg
Wind7.7 mph S
Humidity76%
Visibility—
Dew point42°
Sat, 3156° / 42°0.25
56 °
Atlas, Saturday, 31 October
Rain. High 56°, low 42°.
Pressure29.91 inHg
Wind14 mph W
Humidity74%
Visibility—
Dew point47°
Sun, 0159° / 38°0
59 °
Atlas, Sunday, 1 November
Clear. High 59°, low 38°.
Pressure30.18 inHg
Wind3.8 mph S
Humidity46%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0271° / 50°0.06
71 °
Atlas, Monday, 2 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.06 in
Chance of precipitation18%
Record high87° (2020)
Record low42° (1971)
Tue, 0371° / 50°0.04
71 °
Atlas, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.04 in
Chance of precipitation13%
Record high89° (2018)
Record low38° (2022)
Wed, 0471° / 51°0.04
71 °
Atlas, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.04 in
Chance of precipitation13%
Record high85° (1976)
Record low40° (1973)
Thu, 0569° / 50°0.11
69 °
Atlas, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.11 in
Chance of precipitation17%
Record high85° (2020)
Record low41° (2017)
Fri, 0668° / 51°0.08
68 °
Atlas, Friday, 6 November
Climate normal for this date — 60-year average.
Average high68°
Average low51°
Average precipitation0.08 in
Chance of precipitation18%
Record high82° (1991)
Record low42° (1972)
Sat, 0768° / 50°0.12
68 °
Atlas, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high68°
Average low50°
Average precipitation0.12 in
Chance of precipitation23%
Record high83° (1991)
Record low40° (2017)
Sun, 0866° / 49°0.09
66 °
Atlas, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high66°
Average low49°
Average precipitation0.09 in
Chance of precipitation20%
Record high82° (2019)
Record low40° (2021)
Mon, 0966° / 48°0.12
66 °
Atlas, Monday, 9 November
Climate normal for this date — 60-year average.
Average high66°
Average low48°
Average precipitation0.12 in
Chance of precipitation23%
Record high81° (1990)
Record low39° (2020)
Tue, 1065° / 48°0.19
65 °
Atlas, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.19 in
Chance of precipitation30%
Record high83° (2019)
Record low37° (2022)
Wed, 1165° / 48°0.13
65 °
Atlas, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.13 in
Chance of precipitation27%
Record high86° (2019)
Record low37° (2000)
Thu, 1266° / 48°0.09
66 °
Atlas, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high66°
Average low48°
Average precipitation0.09 in
Chance of precipitation23%
Record high80° (1990)
Record low33° (1985)
Fri, 1365° / 48°0.19
65 °
Atlas, Friday, 13 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.19 in
Chance of precipitation30%
Record high82° (1995)
Record low35° (1985)
Sat, 1465° / 48°0.07
65 °
Atlas, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.07 in
Chance of precipitation22%
Record high82° (2008)
Record low35° (1978)
Sun, 1565° / 48°0.11
65 °
Atlas, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.11 in
Chance of precipitation25%
Record high81° (2008)
Record low35° (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 Atlas, 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 Atlas, 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.