Monthly outlook for Downey, CA: average high 82.3°, average low 67°. That is 2.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 17 October (96.2°), the coolest 13 October (53.2°).
82.3°/67°
Average high / low
+2.1°
Above normal
2 / 1
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
81.9°
79°
+1.6°
21 October – 30 October
83°
77.1°
+3.3°
31 October – 9 November
at normal
74.5°
—
October records over 66 years
104.9°23 October 2017All-time high
34.9°30 October 1971All-time low
Mon, 1262° / 57°0.07
62 °
Downey, Monday, 12 October
Light rain. High 62°, low 57°.
Pressure29.88 inHg
Wind5 mph SW
Humidity63%
Visibility6.2 mi
Dew point52°
Tue, 1372° / 53°0
72 °
Downey, Tuesday, 13 October
Clear. High 72°, low 53°.
Pressure30.00 inHg
Wind1.8 mph W
Humidity54%
Visibility6.2 mi
Dew point50°
Wed, 1479° / 54°0
79 °
Downey, Wednesday, 14 October
Clear. High 79°, low 54°.
Pressure30.03 inHg
Wind0.4 mph W
Humidity48%
Visibility6.2 mi
Dew point52°
Thu, 1587° / 56°0
87 °
Downey, Thursday, 15 October
Clear. High 87°, low 56°.
Pressure30.00 inHg
Wind4.7 mph SW
Humidity40%
Visibility—
Dew point46°
Fri, 1692° / 61°0
92 °
Downey, Friday, 16 October
Clear. High 92°, low 61°.
Pressure29.91 inHg
Wind5.3 mph NE
Humidity29%
Visibility—
Dew point44°
Sat, 1796° / 81°0
96 °
Downey, Saturday, 17 October
Clear. High 96°, low 81°.
Pressure30.00 inHg
Wind6.5 mph E
Humidity15%
Visibility—
Dew point35°
Sun, 1892° / 81°0
92 °
Downey, Sunday, 18 October
Clear. High 92°, low 81°.
Pressure29.97 inHg
Wind8.9 mph SW
Humidity12%
Visibility—
Dew point28°
Mon, 1988° / 76°0
88 °
Downey, Monday, 19 October
Mostly clear. High 88°, low 76°.
Pressure29.97 inHg
Wind8.5 mph SW
Humidity26%
Visibility—
Dew point44°
Tue, 2082° / 71°0
82 °
Downey, Tuesday, 20 October
Clear. High 82°, low 71°.
Pressure29.94 inHg
Wind8.4 mph S
Humidity52%
Visibility—
Dew point57°
Wed, 2182° / 70°0
82 °
Downey, Wednesday, 21 October
Clear. High 82°, low 70°.
Pressure29.94 inHg
Wind8.9 mph SW
Humidity52%
Visibility—
Dew point56°
Thu, 2281° / 70°0
81 °
Downey, Thursday, 22 October
Clear. High 81°, low 70°.
Pressure30.00 inHg
Wind9.9 mph SW
Humidity50%
Visibility—
Dew point55°
Fri, 2382° / 69°0
82 °
Downey, Friday, 23 October
Clear. High 82°, low 69°.
Pressure30.00 inHg
Wind9.2 mph SW
Humidity42%
Visibility—
Dew point50°
Sat, 2483° / 70°0
83 °
Downey, Saturday, 24 October
Clear. High 83°, low 70°.
Pressure29.94 inHg
Wind7.9 mph W
Humidity35%
Visibility—
Dew point46°
Sun, 2585° / 71°0
85 °
Downey, Sunday, 25 October
Clear. High 85°, low 71°.
Pressure29.88 inHg
Wind8.5 mph SW
Humidity27%
Visibility—
Dew point42°
Mon, 2684° / 72°0
84 °
Downey, Monday, 26 October
Overcast. High 84°, low 72°.
Pressure29.94 inHg
Wind8.9 mph W
Humidity41%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2776° / 55°0.04
76 °
Downey, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.04 in
Chance of precipitation8%
Record high92° (1965)
Record low44° (1996)
Wed, 2876° / 54°0.02
76 °
Downey, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high76°
Average low54°
Average precipitation0.02 in
Chance of precipitation10%
Record high93° (2025)
Record low40° (1970)
Thu, 2976° / 54°0.01
76 °
Downey, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high76°
Average low54°
Average precipitation0.01 in
Chance of precipitation3%
Record high96° (2025)
Record low36° (1971)
Fri, 3075° / 54°0.04
75 °
Downey, Friday, 30 October
Climate normal for this date — 60-year average.
Average high75°
Average low54°
Average precipitation0.04 in
Chance of precipitation13%
Record high93° (1962)
Record low35° (1971)
Sat, 3176° / 53°0.02
76 °
Downey, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high76°
Average low53°
Average precipitation0.02 in
Chance of precipitation5%
Record high91° (1967)
Record low41° (1971)
Sun, 0176° / 52°0.04
76 °
Downey, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.04 in
Chance of precipitation10%
Record high95° (1997)
Record low41° (1971)
Mon, 0276° / 53°0.01
76 °
Downey, Monday, 2 November
Climate normal for this date — 60-year average.
Average high76°
Average low53°
Average precipitation0.01 in
Chance of precipitation8%
Record high95° (1997)
Record low42° (1971)
Tue, 0377° / 52°0
77 °
Downey, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high77°
Average low52°
Average precipitation0 in
Chance of precipitation2%
Record high94° (2010)
Record low42° (1990)
Wed, 0475° / 52°0.02
75 °
Downey, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high75°
Average low52°
Average precipitation0.02 in
Chance of precipitation8%
Record high95° (1976)
Record low38° (1994)
Thu, 0574° / 52°0.01
74 °
Downey, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high74°
Average low52°
Average precipitation0.01 in
Chance of precipitation2%
Record high96° (2020)
Record low42° (2011)
Fri, 0673° / 53°0.02
73 °
Downey, Friday, 6 November
Climate normal for this date — 60-year average.
Average high73°
Average low53°
Average precipitation0.02 in
Chance of precipitation7%
Record high92° (2006)
Record low43° (2011)
Sat, 0772° / 53°0.06
72 °
Downey, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high72°
Average low53°
Average precipitation0.06 in
Chance of precipitation10%
Record high91° (2006)
Record low39° (2011)
Sun, 0873° / 52°0.07
73 °
Downey, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high73°
Average low52°
Average precipitation0.07 in
Chance of precipitation17%
Record high90° (2016)
Record low40° (2011)
Mon, 0973° / 52°0.03
73 °
Downey, Monday, 9 November
Climate normal for this date — 60-year average.
Average high73°
Average low52°
Average precipitation0.03 in
Chance of precipitation8%
Record high93° (2016)
Record low40° (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 Downey, 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 Downey, 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.