Monthly outlook for Spanish Flat, CA: average high 75.4°, average low 53.2°. That is 0.2° below the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 1.0 inches. The warmest day looks like 16 October (89.5°), the coolest 20 October (44.4°).
75.4°/53.2°
Average high / low
−0.2°
Below normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
77.5°
77.3°
+0.2°
23 October – 1 November
71.9°
72.3°
-0.2°
2 November – 11 November
at normal
68.1°
—
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).
Wed, 1480° / 47°0
80 °
Spanish Flat, Wednesday, 14 October
Clear. High 80°, low 47°.
Pressure30.12 inHg
Wind6 mph N
Humidity20%
Visibility6.2 mi
Dew point30°
Thu, 1588° / 62°0
88 °
Spanish Flat, Thursday, 15 October
Clear. High 88°, low 62°.
Pressure30.09 inHg
Wind11.4 mph NE
Humidity17%
Visibility6.2 mi
Dew point34°
Fri, 1690° / 66°0
90 °
Spanish Flat, Friday, 16 October
Clear. High 90°, low 66°.
Pressure30.06 inHg
Wind4.4 mph N
Humidity19%
Visibility6.2 mi
Dew point36°
Sat, 1789° / 62°0
89 °
Spanish Flat, Saturday, 17 October
Clear. High 89°, low 62°.
Pressure30.03 inHg
Wind9.1 mph SW
Humidity24%
Visibility—
Dew point38°
Sun, 1876° / 51°0
76 °
Spanish Flat, Sunday, 18 October
Clear. High 76°, low 51°.
Pressure29.97 inHg
Wind8.9 mph SW
Humidity55%
Visibility—
Dew point49°
Mon, 1966° / 46°0
66 °
Spanish Flat, Monday, 19 October
Overcast. High 66°, low 46°.
Pressure30.03 inHg
Wind12.1 mph NW
Humidity75%
Visibility—
Dew point45°
Tue, 2066° / 44°0
66 °
Spanish Flat, Tuesday, 20 October
Clear. High 66°, low 44°.
Pressure30.03 inHg
Wind10.9 mph N
Humidity38%
Visibility—
Dew point32°
Wed, 2169° / 54°0
69 °
Spanish Flat, Wednesday, 21 October
Clear. High 69°, low 54°.
Pressure30.06 inHg
Wind15.5 mph N
Humidity33%
Visibility—
Dew point32°
Thu, 2276° / 53°0
76 °
Spanish Flat, Thursday, 22 October
Clear. High 76°, low 53°.
Pressure30.12 inHg
Wind5.9 mph N
Humidity26%
Visibility—
Dew point31°
Fri, 2373° / 54°0
73 °
Spanish Flat, Friday, 23 October
Clear. High 73°, low 54°.
Pressure30.09 inHg
Wind16 mph N
Humidity23%
Visibility—
Dew point26°
Sat, 2473° / 56°0
73 °
Spanish Flat, Saturday, 24 October
Clear. High 73°, low 56°.
Pressure30.18 inHg
Wind15.1 mph N
Humidity20%
Visibility—
Dew point23°
Sun, 2575° / 52°0
75 °
Spanish Flat, Sunday, 25 October
Clear. High 75°, low 52°.
Pressure30.09 inHg
Wind5.9 mph N
Humidity17%
Visibility—
Dew point20°
Mon, 2672° / 57°0
72 °
Spanish Flat, Monday, 26 October
Partly cloudy. High 72°, low 57°.
Pressure29.83 inHg
Wind24.2 mph NE
Humidity20%
Visibility—
Dew point21°
Tue, 2774° / 53°0
74 °
Spanish Flat, Tuesday, 27 October
Clear. High 74°, low 53°.
Pressure29.71 inHg
Wind16.3 mph N
Humidity22%
Visibility—
Dew point25°
Wed, 2864° / 50°0
64 °
Spanish Flat, Wednesday, 28 October
Overcast. High 64°, low 50°.
Pressure29.97 inHg
Wind6 mph SE
Humidity46%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2971° / 51°0.08
71 °
Spanish Flat, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.08 in
Chance of precipitation22%
Record high85° (1965)
Record low40° (1971)
Fri, 3070° / 51°0.07
70 °
Spanish Flat, Friday, 30 October
Climate normal for this date — 60-year average.
Average high70°
Average low51°
Average precipitation0.07 in
Chance of precipitation17%
Record high87° (1966)
Record low44° (1989)
Sat, 3171° / 51°0.04
71 °
Spanish Flat, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.04 in
Chance of precipitation18%
Record high89° (1966)
Record low42° (2019)
Sun, 0171° / 51°0.08
71 °
Spanish Flat, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.08 in
Chance of precipitation15%
Record high89° (1967)
Record low39° (2003)
Mon, 0271° / 50°0.06
71 °
Spanish Flat, 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 °
Spanish Flat, 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 °
Spanish Flat, 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 °
Spanish Flat, 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 °
Spanish Flat, 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 °
Spanish Flat, 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 °
Spanish Flat, 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 °
Spanish Flat, 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 °
Spanish Flat, 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 °
Spanish Flat, 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)
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 Spanish Flat, 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 Spanish Flat, 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.