Monthly outlook for Norco, CA: average high 82.1°, average low 65.9°. That is 1.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 17 October (91.2°), the coolest 14 October (48.2°).
82.1°/65.9°
Average high / low
+1.5°
Above normal
2 / 1
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
80.2°
80.1°
+0.1°
21 October – 30 October
85.3°
77.3°
+4.4°
31 October – 9 November
at normal
74.6°
—
October records over 66 years
105.4°1 October 2020All-time high
33.3°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Corona (4 mi).
Mon, 1262° / 56°0.11
62 °
Norco, Monday, 12 October
Light rain. High 62°, low 56°.
Pressure29.91 inHg
Wind6.5 mph SW
Humidity68%
Visibility3.8 mi
Dew point53°
Tue, 1369° / 53°0
69 °
Norco, Tuesday, 13 October
Partly cloudy. High 69°, low 53°.
Pressure30.00 inHg
Wind1.9 mph N
Humidity55%
Visibility6.2 mi
Dew point50°
Wed, 1476° / 48°0
76 °
Norco, Wednesday, 14 October
Clear. High 76°, low 48°.
Pressure30.06 inHg
Wind0.2 mph SE
Humidity32%
Visibility6.2 mi
Dew point41°
Thu, 1583° / 54°0
83 °
Norco, Thursday, 15 October
Clear. High 83°, low 54°.
Pressure29.97 inHg
Wind2.9 mph NE
Humidity32%
Visibility6.2 mi
Dew point47°
Fri, 1687° / 69°0
87 °
Norco, Friday, 16 October
Clear. High 87°, low 69°.
Pressure29.91 inHg
Wind13.5 mph NE
Humidity25%
Visibility—
Dew point41°
Sat, 1791° / 66°0
91 °
Norco, Saturday, 17 October
Clear. High 91°, low 66°.
Pressure30.00 inHg
Wind11.5 mph E
Humidity29%
Visibility—
Dew point46°
Sun, 1891° / 76°0
91 °
Norco, Sunday, 18 October
Clear. High 91°, low 76°.
Pressure29.97 inHg
Wind8.9 mph W
Humidity19%
Visibility—
Dew point38°
Mon, 1990° / 76°0
90 °
Norco, Monday, 19 October
Clear. High 90°, low 76°.
Pressure30.00 inHg
Wind10.2 mph W
Humidity22%
Visibility—
Dew point41°
Tue, 2084° / 72°0
84 °
Norco, Tuesday, 20 October
Clear. High 84°, low 72°.
Pressure29.88 inHg
Wind9.4 mph W
Humidity27%
Visibility—
Dew point42°
Wed, 2184° / 69°0
84 °
Norco, Wednesday, 21 October
Clear. High 84°, low 69°.
Pressure29.85 inHg
Wind9.3 mph W
Humidity40%
Visibility—
Dew point50°
Thu, 2285° / 68°0
85 °
Norco, Thursday, 22 October
Clear. High 85°, low 68°.
Pressure29.85 inHg
Wind6.8 mph W
Humidity37%
Visibility—
Dew point48°
Fri, 2386° / 73°0
86 °
Norco, Friday, 23 October
Clear. High 86°, low 73°.
Pressure29.94 inHg
Wind23.3 mph NE
Humidity8%
Visibility—
Dew point15°
Sat, 2481° / 71°0
81 °
Norco, Saturday, 24 October
Clear. High 81°, low 71°.
Pressure30.09 inHg
Wind28.6 mph NE
Humidity12%
Visibility—
Dew point20°
Sun, 2586° / 73°0
86 °
Norco, Sunday, 25 October
Clear. High 86°, low 73°.
Pressure30.03 inHg
Wind18.9 mph N
Humidity5%
Visibility—
Dew point3°
Mon, 2690° / 70°0
90 °
Norco, Monday, 26 October
Clear. High 90°, low 70°.
Pressure30.00 inHg
Wind12.3 mph N
Humidity7%
Visibility—
Dew point12°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2777° / 54°0.06
77 °
Norco, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high77°
Average low54°
Average precipitation0.06 in
Chance of precipitation7%
Record high92° (1965)
Record low45° (1996)
Wed, 2876° / 53°0.04
76 °
Norco, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high76°
Average low53°
Average precipitation0.04 in
Chance of precipitation15%
Record high94° (2008)
Record low43° (1996)
Thu, 2975° / 52°0.02
75 °
Norco, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high75°
Average low52°
Average precipitation0.02 in
Chance of precipitation8%
Record high94° (2025)
Record low35° (1971)
Fri, 3075° / 52°0.05
75 °
Norco, Friday, 30 October
Climate normal for this date — 60-year average.
Average high75°
Average low52°
Average precipitation0.05 in
Chance of precipitation20%
Record high92° (1966)
Record low33° (1971)
Sat, 3175° / 52°0.02
75 °
Norco, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high75°
Average low52°
Average precipitation0.02 in
Chance of precipitation12%
Record high91° (1966)
Record low39° (1971)
Sun, 0176° / 51°0.05
76 °
Norco, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high76°
Average low51°
Average precipitation0.05 in
Chance of precipitation13%
Record high93° (1997)
Record low40° (1971)
Mon, 0276° / 52°0.02
76 °
Norco, Monday, 2 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.02 in
Chance of precipitation15%
Record high93° (1997)
Record low41° (1971)
Tue, 0377° / 50°0
77 °
Norco, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high77°
Average low50°
Average precipitation0 in
Chance of precipitation3%
Record high93° (2010)
Record low41° (1990)
Wed, 0476° / 51°0.03
76 °
Norco, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high76°
Average low51°
Average precipitation0.03 in
Chance of precipitation10%
Record high94° (2020)
Record low37° (1994)
Thu, 0575° / 51°0.01
75 °
Norco, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high75°
Average low51°
Average precipitation0.01 in
Chance of precipitation3%
Record high94° (2020)
Record low41° (2011)
Fri, 0674° / 51°0.02
74 °
Norco, Friday, 6 November
Climate normal for this date — 60-year average.
Average high74°
Average low51°
Average precipitation0.02 in
Chance of precipitation7%
Record high91° (2006)
Record low42° (2011)
Sat, 0773° / 51°0.06
73 °
Norco, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.06 in
Chance of precipitation8%
Record high91° (2006)
Record low37° (2011)
Sun, 0873° / 51°0.09
73 °
Norco, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.09 in
Chance of precipitation22%
Record high91° (2016)
Record low38° (2011)
Mon, 0972° / 51°0.05
72 °
Norco, Monday, 9 November
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.05 in
Chance of precipitation13%
Record high92° (2025)
Record low39° (2011)
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 Norco, 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 Norco, 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.