Monthly outlook for Deer Park, CA: average high 69.8°, average low 48.5°. That is 2.2° below the climate normal for October. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 2 days and 1.1 inches. The warmest day looks like 17 October (86.1°), the coolest 19 October (35.1°).
69.8°/48.5°
Average high / low
−2.2°
Below normal
6 / 2
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
72.7°
75.5°
-1.5°
27 October – 5 November
65°
71°
-3.3°
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 (2 mi).
Sun, 1876° / 41°0
76 °
Deer Park, Sunday, 18 October
Clear. High 76°, low 41°.
Pressure29.97 inHg
Wind5.1 mph SW
Humidity23%
Visibility6.2 mi
Dew point38°
Mon, 1966° / 35°0
66 °
Deer Park, Monday, 19 October
Mostly clear. High 66°, low 35°.
Pressure29.94 inHg
Wind6 mph SW
Humidity46%
Visibility6.2 mi
Dew point40°
Tue, 2066° / 44°0.06
66 °
Deer Park, Tuesday, 20 October
Light rain. High 66°, low 44°.
Pressure29.91 inHg
Wind4.3 mph NE
Humidity44%
Visibility6.2 mi
Dew point39°
Wed, 2165° / 51°0.48
65 °
Deer Park, Wednesday, 21 October
Rain. High 65°, low 51°.
Pressure29.91 inHg
Wind2 mph SW
Humidity70%
Visibility6.2 mi
Dew point51°
Thu, 2263° / 49°0.04
63 °
Deer Park, Thursday, 22 October
Light rain. High 63°, low 49°.
Pressure30.00 inHg
Wind5.8 mph SW
Humidity93%
Visibility—
Dew point53°
Fri, 2372° / 44°0
72 °
Deer Park, Friday, 23 October
Clear. High 72°, low 44°.
Pressure30.12 inHg
Wind3.2 mph W
Humidity62%
Visibility—
Dew point47°
Sat, 2479° / 52°0
79 °
Deer Park, Saturday, 24 October
Clear. High 79°, low 52°.
Pressure30.09 inHg
Wind5.2 mph NE
Humidity20%
Visibility—
Dew point26°
Sun, 2577° / 55°0
77 °
Deer Park, Sunday, 25 October
Overcast. High 77°, low 55°.
Pressure30.03 inHg
Wind4 mph NE
Humidity23%
Visibility—
Dew point28°
Mon, 2677° / 55°0
77 °
Deer Park, Monday, 26 October
Overcast. High 77°, low 55°.
Pressure29.80 inHg
Wind5.1 mph NE
Humidity21%
Visibility—
Dew point27°
Tue, 2775° / 51°0
75 °
Deer Park, Tuesday, 27 October
Overcast. High 75°, low 51°.
Pressure29.80 inHg
Wind5.8 mph SW
Humidity26%
Visibility—
Dew point31°
Wed, 2869° / 47°0
69 °
Deer Park, Wednesday, 28 October
Partly cloudy. High 69°, low 47°.
Pressure30.03 inHg
Wind3.6 mph SW
Humidity58%
Visibility—
Dew point45°
Thu, 2969° / 49°0
69 °
Deer Park, Thursday, 29 October
Mostly clear. High 69°, low 49°.
Pressure30.12 inHg
Wind6.2 mph SW
Humidity43%
Visibility—
Dew point40°
Fri, 3058° / 51°0.11
58 °
Deer Park, Friday, 30 October
Light rain. High 58°, low 51°.
Pressure29.97 inHg
Wind6.2 mph SW
Humidity97%
Visibility—
Dew point52°
Sat, 3155° / 51°0.04
55 °
Deer Park, Saturday, 31 October
Light rain. High 55°, low 51°.
Pressure30.03 inHg
Wind3.4 mph SE
Humidity84%
Visibility—
Dew point49°
Sun, 0164° / 51°0.04
64 °
Deer Park, Sunday, 1 November
Light rain. High 64°, low 51°.
Pressure30.00 inHg
Wind13.2 mph W
Humidity65%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0271° / 50°0.06
71 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 °
Deer Park, 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 Deer Park, 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 Deer Park, 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.