Monthly outlook for Montebello, CA: average high 78.7°, average low 66.3°. That is 0.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 16 October (93.3°), the coolest 22 October (58.8°).
78.7°/66.3°
Average high / low
+0.5°
Above normal
3 / 1
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
80.2°
78.8°
+0.8°
26 October – 4 November
76.2°
76.3°
-0.1°
5 November – 14 November
at normal
72.8°
—
October records over 66 years
104.9°4 October 1987All-time high
34.9°30 October 1971All-time low
Sat, 1793° / 78°0
93 °
Montebello, Saturday, 17 October
Mostly clear. High 93°, low 78°.
Pressure30.00 inHg
Wind3.3 mph W
Humidity16%
Visibility6.2 mi
Dew point38°
Sun, 1889° / 72°0
89 °
Montebello, Sunday, 18 October
Clear. High 89°, low 72°.
Pressure29.97 inHg
Wind2.6 mph S
Humidity17%
Visibility6.2 mi
Dew point36°
Mon, 1986° / 65°0
86 °
Montebello, Monday, 19 October
Clear. High 86°, low 65°.
Pressure29.91 inHg
Wind3.2 mph S
Humidity30%
Visibility6.2 mi
Dew point49°
Tue, 2080° / 64°0
80 °
Montebello, Tuesday, 20 October
Partly cloudy. High 80°, low 64°.
Pressure29.88 inHg
Wind3.4 mph S
Humidity57%
Visibility6.2 mi
Dew point58°
Wed, 2167° / 60°0.16
67 °
Montebello, Wednesday, 21 October
Light rain. High 67°, low 60°.
Pressure29.91 inHg
Wind3.1 mph E
Humidity65%
Visibility—
Dew point54°
Thu, 2274° / 59°0.17
74 °
Montebello, Thursday, 22 October
Rain. High 74°, low 59°.
Pressure29.97 inHg
Wind11.6 mph SW
Humidity55%
Visibility—
Dew point52°
Fri, 2374° / 65°0
74 °
Montebello, Friday, 23 October
Clear. High 74°, low 65°.
Pressure30.00 inHg
Wind10.9 mph SW
Humidity51%
Visibility—
Dew point50°
Sat, 2471° / 64°0.03
71 °
Montebello, Saturday, 24 October
Light rain. High 71°, low 64°.
Pressure29.94 inHg
Wind13.1 mph SW
Humidity53%
Visibility—
Dew point48°
Sun, 2576° / 64°0
76 °
Montebello, Sunday, 25 October
Mostly clear. High 76°, low 64°.
Pressure30.03 inHg
Wind7 mph W
Humidity46%
Visibility—
Dew point47°
Mon, 2681° / 69°0
81 °
Montebello, Monday, 26 October
Overcast. High 81°, low 69°.
Pressure29.91 inHg
Wind3.7 mph NW
Humidity18%
Visibility—
Dew point28°
Tue, 2785° / 68°0.01
85 °
Montebello, Tuesday, 27 October
Light rain. High 85°, low 68°.
Pressure29.77 inHg
Wind12.9 mph SW
Humidity17%
Visibility—
Dew point29°
Wed, 2871° / 65°0.21
71 °
Montebello, Wednesday, 28 October
Light rain. High 71°, low 65°.
Pressure29.68 inHg
Wind15.1 mph SW
Humidity56%
Visibility—
Dew point52°
Thu, 2969° / 64°0.01
69 °
Montebello, Thursday, 29 October
Light rain. High 69°, low 64°.
Pressure30.03 inHg
Wind7.9 mph S
Humidity52%
Visibility—
Dew point48°
Fri, 3074° / 64°0
74 °
Montebello, Friday, 30 October
Overcast. High 74°, low 64°.
Pressure30.03 inHg
Wind8.2 mph SW
Humidity48%
Visibility—
Dew point47°
Sat, 3176° / 67°0
76 °
Montebello, Saturday, 31 October
Overcast. High 76°, low 67°.
Pressure30.03 inHg
Wind8.8 mph SW
Humidity44%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0177° / 52°0.03
77 °
Montebello, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high77°
Average low52°
Average precipitation0.03 in
Chance of precipitation10%
Record high95° (1997)
Record low40° (1971)
Mon, 0277° / 52°0.02
77 °
Montebello, Monday, 2 November
Climate normal for this date — 60-year average.
Average high77°
Average low52°
Average precipitation0.02 in
Chance of precipitation13%
Record high95° (1997)
Record low43° (1971)
Tue, 0377° / 52°0
77 °
Montebello, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high77°
Average low52°
Average precipitation0 in
Chance of precipitation3%
Record high94° (1976)
Record low41° (1990)
Wed, 0476° / 52°0.02
76 °
Montebello, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.02 in
Chance of precipitation5%
Record high95° (1976)
Record low38° (1994)
Thu, 0574° / 52°0.01
74 °
Montebello, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high74°
Average low52°
Average precipitation0.01 in
Chance of precipitation3%
Record high96° (2020)
Record low41° (2011)
Fri, 0674° / 52°0.02
74 °
Montebello, Friday, 6 November
Climate normal for this date — 60-year average.
Average high74°
Average low52°
Average precipitation0.02 in
Chance of precipitation8%
Record high93° (2006)
Record low43° (2011)
Sat, 0773° / 52°0.06
73 °
Montebello, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high73°
Average low52°
Average precipitation0.06 in
Chance of precipitation8%
Record high92° (2006)
Record low39° (2011)
Sun, 0873° / 52°0.08
73 °
Montebello, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high73°
Average low52°
Average precipitation0.08 in
Chance of precipitation20%
Record high91° (2016)
Record low40° (2011)
Mon, 0973° / 51°0.04
73 °
Montebello, Monday, 9 November
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.04 in
Chance of precipitation15%
Record high93° (2016)
Record low40° (2011)
Tue, 1072° / 51°0.03
72 °
Montebello, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.03 in
Chance of precipitation10%
Record high91° (1990)
Record low42° (1998)
Wed, 1172° / 50°0.05
72 °
Montebello, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.05 in
Chance of precipitation10%
Record high91° (2021)
Record low38° (2012)
Thu, 1273° / 50°0.03
73 °
Montebello, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high93° (2021)
Record low36° (1978)
Fri, 1373° / 50°0.03
73 °
Montebello, Friday, 13 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high91° (2021)
Record low37° (2000)
Sat, 1472° / 50°0.05
72 °
Montebello, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.05 in
Chance of precipitation8%
Record high92° (2021)
Record low35° (1964)
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 Montebello, 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 Montebello, 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.