Monthly outlook for Arlanza, CA: average high 80.7°, average low 65.4°. That is 1.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 16 October (91.6°), the coolest 21 October (59.3°).
80.7°/65.4°
Average high / low
+1.6°
Above normal
4 / 2
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
80.5°
79.1°
+0.8°
26 October – 4 November
80.9°
75.9°
+2.8°
5 November – 14 November
at normal
72.2°
—
October records over 66 years
106.5°1 October 2020All-time high
31.3°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Jurupa Valley (4 mi).
Sat, 1788° / 71°0
88 °
Arlanza, Saturday, 17 October
Overcast. High 88°, low 71°.
Pressure30.00 inHg
Wind3.6 mph S
Humidity14%
Visibility6.2 mi
Dew point33°
Sun, 1890° / 65°0
90 °
Arlanza, Sunday, 18 October
Clear. High 90°, low 65°.
Pressure29.94 inHg
Wind1.9 mph SE
Humidity15%
Visibility6.2 mi
Dew point34°
Mon, 1988° / 66°0
88 °
Arlanza, Monday, 19 October
Clear. High 88°, low 66°.
Pressure29.88 inHg
Wind2.1 mph W
Humidity23%
Visibility6.2 mi
Dew point42°
Tue, 2078° / 64°0.05
78 °
Arlanza, Tuesday, 20 October
Light rain. High 78°, low 64°.
Pressure29.85 inHg
Wind10.6 mph W
Humidity59%
Visibility—
Dew point55°
Wed, 2163° / 59°0.9
63 °
Arlanza, Wednesday, 21 October
Rain. High 63°, low 59°.
Pressure29.94 inHg
Wind5 mph NW
Humidity90%
Visibility—
Dew point57°
Thu, 2273° / 64°0.46
73 °
Arlanza, Thursday, 22 October
Rain. High 73°, low 64°.
Pressure29.94 inHg
Wind11 mph W
Humidity50%
Visibility—
Dew point50°
Fri, 2369° / 61°0.06
69 °
Arlanza, Friday, 23 October
Light rain. High 69°, low 61°.
Pressure30.00 inHg
Wind6.6 mph W
Humidity57%
Visibility—
Dew point51°
Sat, 2479° / 62°0
79 °
Arlanza, Saturday, 24 October
Clear. High 79°, low 62°.
Pressure30.03 inHg
Wind8.3 mph W
Humidity48%
Visibility—
Dew point49°
Sun, 2585° / 67°0
85 °
Arlanza, Sunday, 25 October
Clear. High 85°, low 67°.
Pressure30.06 inHg
Wind7.1 mph N
Humidity17%
Visibility—
Dew point29°
Mon, 2684° / 66°0
84 °
Arlanza, Monday, 26 October
Clear. High 84°, low 66°.
Pressure29.91 inHg
Wind9.6 mph N
Humidity8%
Visibility—
Dew point10°
Tue, 2785° / 67°0
85 °
Arlanza, Tuesday, 27 October
Clear. High 85°, low 67°.
Pressure29.80 inHg
Wind9 mph W
Humidity10%
Visibility—
Dew point16°
Wed, 2878° / 66°0
78 °
Arlanza, Wednesday, 28 October
Overcast. High 78°, low 66°.
Pressure29.83 inHg
Wind7.3 mph W
Humidity16%
Visibility—
Dew point24°
Thu, 2978° / 64°0
78 °
Arlanza, Thursday, 29 October
Clear. High 78°, low 64°.
Pressure30.00 inHg
Wind8.4 mph NE
Humidity11%
Visibility—
Dew point14°
Fri, 3080° / 64°0
80 °
Arlanza, Friday, 30 October
Clear. High 80°, low 64°.
Pressure30.12 inHg
Wind5.5 mph W
Humidity12%
Visibility—
Dew point17°
Sat, 3180° / 65°0
80 °
Arlanza, Saturday, 31 October
Mostly clear. High 80°, low 65°.
Pressure30.03 inHg
Wind9.4 mph W
Humidity12%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0176° / 50°0.04
76 °
Arlanza, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high76°
Average low50°
Average precipitation0.04 in
Chance of precipitation13%
Record high91° (1997)
Record low38° (1971)
Mon, 0276° / 50°0.03
76 °
Arlanza, Monday, 2 November
Climate normal for this date — 60-year average.
Average high76°
Average low50°
Average precipitation0.03 in
Chance of precipitation17%
Record high91° (1997)
Record low38° (1971)
Tue, 0376° / 49°0.01
76 °
Arlanza, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high76°
Average low49°
Average precipitation0.01 in
Chance of precipitation5%
Record high93° (2010)
Record low39° (1990)
Wed, 0476° / 50°0.03
76 °
Arlanza, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high76°
Average low50°
Average precipitation0.03 in
Chance of precipitation12%
Record high94° (2020)
Record low35° (1994)
Thu, 0575° / 50°0.01
75 °
Arlanza, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high75°
Average low50°
Average precipitation0.01 in
Chance of precipitation5%
Record high94° (2020)
Record low39° (2015)
Fri, 0673° / 50°0.02
73 °
Arlanza, Friday, 6 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.02 in
Chance of precipitation10%
Record high90° (2006)
Record low41° (2015)
Sat, 0772° / 50°0.06
72 °
Arlanza, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.06 in
Chance of precipitation8%
Record high91° (2006)
Record low37° (2011)
Sun, 0872° / 50°0.07
72 °
Arlanza, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.07 in
Chance of precipitation23%
Record high91° (2016)
Record low36° (2011)
Mon, 0972° / 49°0.06
72 °
Arlanza, Monday, 9 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.06 in
Chance of precipitation17%
Record high92° (2025)
Record low37° (2011)
Tue, 1071° / 49°0.04
71 °
Arlanza, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.04 in
Chance of precipitation15%
Record high93° (2025)
Record low39° (2020)
Wed, 1171° / 48°0.07
71 °
Arlanza, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high71°
Average low48°
Average precipitation0.07 in
Chance of precipitation15%
Record high88° (2021)
Record low36° (2012)
Thu, 1272° / 48°0.04
72 °
Arlanza, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high72°
Average low48°
Average precipitation0.04 in
Chance of precipitation13%
Record high91° (2021)
Record low32° (2000)
Fri, 1372° / 47°0.04
72 °
Arlanza, Friday, 13 November
Climate normal for this date — 60-year average.
Average high72°
Average low47°
Average precipitation0.04 in
Chance of precipitation13%
Record high92° (2021)
Record low32° (1985)
Sat, 1471° / 48°0.05
71 °
Arlanza, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high71°
Average low48°
Average precipitation0.05 in
Chance of precipitation17%
Record high92° (2021)
Record low33° (1985)
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 Arlanza, 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 Arlanza, 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.