Monthly outlook for Big River, CA: average high 80.5°, average low 66°. That is 3.6° below the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 1 days and 0.2 inches. The warmest day looks like 19 October (89.8°), the coolest 14 October (55.1°).
80.5°/66°
Average high / low
−3.6°
Below normal
2 / 1
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
80.8°
88.5°
-4.3°
22 October – 31 October
80°
83.4°
-1.9°
1 November – 10 November
at normal
79.8°
—
October records over 66 years
111.9°1 October 2024All-time high
33.1°30 October 1971All-time low
Tue, 1371° / 57°0
71 °
Big River, Tuesday, 13 October
Clear. High 71°, low 57°.
Pressure29.94 inHg
Wind5.5 mph SW
Humidity47%
Visibility6.2 mi
Dew point47°
Wed, 1473° / 55°0
73 °
Big River, Wednesday, 14 October
Clear. High 73°, low 55°.
Pressure30.03 inHg
Wind11.5 mph N
Humidity38%
Visibility6.2 mi
Dew point44°
Thu, 1578° / 60°0
78 °
Big River, Thursday, 15 October
Clear. High 78°, low 60°.
Pressure29.97 inHg
Wind14.6 mph N
Humidity38%
Visibility6.2 mi
Dew point48°
Fri, 1681° / 61°0.02
81 °
Big River, Friday, 16 October
Light rain. High 81°, low 61°.
Pressure30.03 inHg
Wind13.7 mph N
Humidity36%
Visibility—
Dew point45°
Sat, 1785° / 65°0
85 °
Big River, Saturday, 17 October
Mostly clear. High 85°, low 65°.
Pressure30.03 inHg
Wind8.7 mph E
Humidity33%
Visibility—
Dew point45°
Sun, 1887° / 74°0
87 °
Big River, Sunday, 18 October
Mostly clear. High 87°, low 74°.
Pressure30.00 inHg
Wind3.9 mph SE
Humidity25%
Visibility—
Dew point42°
Mon, 1990° / 74°0
90 °
Big River, Monday, 19 October
Clear. High 90°, low 74°.
Pressure29.94 inHg
Wind8.7 mph SW
Humidity25%
Visibility—
Dew point44°
Tue, 2088° / 72°0
88 °
Big River, Tuesday, 20 October
Clear. High 88°, low 72°.
Pressure29.77 inHg
Wind13.5 mph W
Humidity27%
Visibility—
Dew point44°
Wed, 2184° / 69°0
84 °
Big River, Wednesday, 21 October
Clear. High 84°, low 69°.
Pressure29.97 inHg
Wind24.2 mph NW
Humidity10%
Visibility—
Dew point17°
Thu, 2287° / 64°0
87 °
Big River, Thursday, 22 October
Clear. High 87°, low 64°.
Pressure30.06 inHg
Wind7.3 mph N
Humidity11%
Visibility—
Dew point17°
Fri, 2387° / 71°0
87 °
Big River, Friday, 23 October
Overcast. High 87°, low 71°.
Pressure29.85 inHg
Wind7 mph N
Humidity10%
Visibility—
Dew point18°
Sat, 2481° / 72°0
81 °
Big River, Saturday, 24 October
Overcast. High 81°, low 72°.
Pressure29.85 inHg
Wind14.7 mph SE
Humidity39%
Visibility—
Dew point49°
Sun, 2575° / 68°0.09
75 °
Big River, Sunday, 25 October
Light rain. High 75°, low 68°.
Pressure29.85 inHg
Wind8.7 mph SE
Humidity75%
Visibility—
Dew point60°
Mon, 2677° / 65°0.33
77 °
Big River, Monday, 26 October
Light rain. High 77°, low 65°.
Pressure29.85 inHg
Wind11.2 mph S
Humidity70%
Visibility—
Dew point58°
Tue, 2774° / 67°0
74 °
Big River, Tuesday, 27 October
Partly cloudy. High 74°, low 67°.
Pressure29.83 inHg
Wind6 mph S
Humidity47%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2883° / 58°0
83 °
Big River, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high83°
Average low58°
Average precipitation0 in
Chance of precipitation5%
Record high96° (1990)
Record low45° (1970)
Thu, 2982° / 57°0
82 °
Big River, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0 in
Chance of precipitation5%
Record high95° (2007)
Record low40° (2019)
Fri, 3081° / 56°0
81 °
Big River, Friday, 30 October
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high94° (1966)
Record low33° (1971)
Sat, 3180° / 56°0.01
80 °
Big River, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.01 in
Chance of precipitation3%
Record high96° (1988)
Record low37° (1971)
Sun, 0181° / 55°0.04
81 °
Big River, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.04 in
Chance of precipitation2%
Record high93° (2020)
Record low40° (1972)
Mon, 0281° / 55°0
81 °
Big River, Monday, 2 November
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0 in
Chance of precipitation5%
Record high95° (2020)
Record low41° (1971)
Tue, 0381° / 54°0
81 °
Big River, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0 in
Chance of precipitation5%
Record high92° (2020)
Record low44° (2004)
Wed, 0481° / 55°0
81 °
Big River, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0 in
Chance of precipitation0%
Record high94° (2020)
Record low45° (2004)
Thu, 0581° / 54°0.02
81 °
Big River, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.02 in
Chance of precipitation3%
Record high96° (2020)
Record low44° (2002)
Fri, 0680° / 55°0
80 °
Big River, Friday, 6 November
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0 in
Chance of precipitation2%
Record high91° (1988)
Record low44° (2011)
Sat, 0779° / 55°0.02
79 °
Big River, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.02 in
Chance of precipitation3%
Record high91° (2007)
Record low43° (2011)
Sun, 0878° / 54°0.02
78 °
Big River, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high78°
Average low54°
Average precipitation0.02 in
Chance of precipitation3%
Record high92° (2016)
Record low43° (2000)
Mon, 0978° / 53°0
78 °
Big River, Monday, 9 November
Climate normal for this date — 60-year average.
Average high78°
Average low53°
Average precipitation0 in
Chance of precipitation2%
Record high89° (2025)
Record low42° (1986)
Tue, 1077° / 52°0.01
77 °
Big River, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high77°
Average low52°
Average precipitation0.01 in
Chance of precipitation3%
Record high89° (2025)
Record low41° (1998)
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 Big River, 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 Big River, 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.