Monthly outlook for Upper Aliso, CA: average high 66.4°, average low 55.6°. That is 2.6° below the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 3 November (73.5°), the coolest 2 November (51.1°).
66.4°/55.6°
Average high / low
−2.6°
Below normal
5 / 2
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
67.3°
71.7°
-2.5°
8 November – 17 November
65°
69.5°
-2.5°
18 November – 27 November
at normal
67.5°
—
October records over 66 years
104.7°24 October 2017All-time high
41.2°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Mission Viejo (6 mi).
Fri, 3067° / 58°0.1
67 °
Upper Aliso, Friday, 30 October
Light rain. High 67°, low 58°.
Pressure29.94 inHg
Wind7.1 mph S
Humidity78%
Visibility2.7 mi
Dew point55°
Sat, 3165° / 56°0.16
65 °
Upper Aliso, Saturday, 31 October
Light rain. High 65°, low 56°.
Pressure29.97 inHg
Wind1.3 mph S
Humidity70%
Visibility6.2 mi
Dew point54°
Sun, 0164° / 55°0.35
64 °
Upper Aliso, Sunday, 1 November
Rain. High 64°, low 55°.
Pressure29.88 inHg
Wind3.5 mph W
Humidity84%
Visibility6.2 mi
Dew point58°
Mon, 0269° / 51°0
69 °
Upper Aliso, Monday, 2 November
Clear. High 69°, low 51°.
Pressure30.09 inHg
Wind3.1 mph W
Humidity57%
Visibility6.2 mi
Dew point52°
Tue, 0374° / 59°0
74 °
Upper Aliso, Tuesday, 3 November
Clear. High 74°, low 59°.
Pressure30.09 inHg
Wind3.4 mph W
Humidity42%
Visibility—
Dew point46°
Wed, 0468° / 58°0
68 °
Upper Aliso, Wednesday, 4 November
Overcast. High 68°, low 58°.
Pressure29.94 inHg
Wind9.4 mph SW
Humidity71%
Visibility—
Dew point55°
Thu, 0567° / 57°0
67 °
Upper Aliso, Thursday, 5 November
Mostly clear. High 67°, low 57°.
Pressure29.91 inHg
Wind6.8 mph SW
Humidity61%
Visibility—
Dew point49°
Fri, 0663° / 55°0.13
63 °
Upper Aliso, Friday, 6 November
Light rain. High 63°, low 55°.
Pressure29.77 inHg
Wind11.7 mph NW
Humidity38%
Visibility—
Dew point33°
Sat, 0766° / 54°0
66 °
Upper Aliso, Saturday, 7 November
Clear. High 66°, low 54°.
Pressure30.00 inHg
Wind7 mph SW
Humidity41%
Visibility—
Dew point38°
Sun, 0867° / 54°0
67 °
Upper Aliso, Sunday, 8 November
Partly cloudy. High 67°, low 54°.
Pressure30.03 inHg
Wind6.2 mph SW
Humidity58%
Visibility—
Dew point47°
Mon, 0968° / 55°0
68 °
Upper Aliso, Monday, 9 November
Overcast. High 68°, low 55°.
Pressure30.06 inHg
Wind5.8 mph W
Humidity61%
Visibility—
Dew point48°
Tue, 1066° / 55°0
66 °
Upper Aliso, Tuesday, 10 November
Overcast. High 66°, low 55°.
Pressure30.06 inHg
Wind9.7 mph W
Humidity66%
Visibility—
Dew point51°
Wed, 1166° / 56°0.03
66 °
Upper Aliso, Wednesday, 11 November
Light rain. High 66°, low 56°.
Pressure30.03 inHg
Wind8.8 mph SW
Humidity79%
Visibility—
Dew point55°
Thu, 1261° / 54°0.02
61 °
Upper Aliso, Thursday, 12 November
Light rain. High 61°, low 54°.
Pressure29.97 inHg
Wind11.2 mph W
Humidity66%
Visibility—
Dew point47°
Fri, 1362° / 52°0
62 °
Upper Aliso, Friday, 13 November
Mostly clear. High 62°, low 52°.
Pressure29.91 inHg
Wind7.7 mph SW
Humidity49%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1470° / 53°0.03
70 °
Upper Aliso, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high70°
Average low53°
Average precipitation0.03 in
Chance of precipitation12%
Record high87° (2021)
Record low42° (1985)
Sun, 1569° / 52°0.07
69 °
Upper Aliso, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high69°
Average low52°
Average precipitation0.07 in
Chance of precipitation10%
Record high86° (2008)
Record low44° (1964)
Mon, 1669° / 52°0.04
69 °
Upper Aliso, Monday, 16 November
Climate normal for this date — 60-year average.
Average high69°
Average low52°
Average precipitation0.04 in
Chance of precipitation8%
Record high85° (2020)
Record low42° (1964)
Tue, 1768° / 53°0.03
68 °
Upper Aliso, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high68°
Average low53°
Average precipitation0.03 in
Chance of precipitation12%
Record high93° (2019)
Record low42° (2024)
Wed, 1868° / 52°0.04
68 °
Upper Aliso, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high68°
Average low52°
Average precipitation0.04 in
Chance of precipitation15%
Record high89° (2019)
Record low40° (1964)
Thu, 1969° / 51°0.04
69 °
Upper Aliso, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.04 in
Chance of precipitation5%
Record high84° (1989)
Record low39° (1964)
Fri, 2068° / 51°0.07
68 °
Upper Aliso, Friday, 20 November
Climate normal for this date — 60-year average.
Average high68°
Average low51°
Average precipitation0.07 in
Chance of precipitation15%
Record high83° (2006)
Record low39° (1964)
Sat, 2167° / 51°0.06
67 °
Upper Aliso, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.06 in
Chance of precipitation15%
Record high88° (2021)
Record low40° (1994)
Sun, 2267° / 51°0.04
67 °
Upper Aliso, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.04 in
Chance of precipitation13%
Record high91° (2017)
Record low42° (1979)
Mon, 2367° / 50°0.01
67 °
Upper Aliso, Monday, 23 November
Climate normal for this date — 60-year average.
Average high67°
Average low50°
Average precipitation0.01 in
Chance of precipitation7%
Record high87° (2017)
Record low42° (1984)
Tue, 2468° / 50°0.02
68 °
Upper Aliso, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high68°
Average low50°
Average precipitation0.02 in
Chance of precipitation10%
Record high83° (1975)
Record low44° (1972)
Wed, 2568° / 50°0.05
68 °
Upper Aliso, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high68°
Average low50°
Average precipitation0.05 in
Chance of precipitation8%
Record high86° (1977)
Record low38° (1973)
Thu, 2667° / 50°0.07
67 °
Upper Aliso, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high67°
Average low50°
Average precipitation0.07 in
Chance of precipitation13%
Record high82° (2014)
Record low41° (2010)
Fri, 2766° / 49°0.04
66 °
Upper Aliso, Friday, 27 November
Climate normal for this date — 60-year average.
Average high66°
Average low49°
Average precipitation0.04 in
Chance of precipitation15%
Record high84° (2014)
Record low40° (2010)
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 Upper Aliso, 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 Upper Aliso, 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.