Monthly outlook for Etiwanda, CA: average high 78.9°, average low 63.6°. That is 0.4° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 17 October (91.2°), the coolest 13 October (43.6°).
78.9°/63.6°
Average high / low
+0.4°
Above normal
3 / 2
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
75.3°
78.9°
-2°
21 October – 30 October
84.8°
75.7°
+5.1°
31 October – 9 November
at normal
72.9°
—
October records over 66 years
102.7°2 October 2024All-time high
32.4°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Rancho Cucamonga (2 mi).
Mon, 1259° / 45°0.48
59 °
Etiwanda, Monday, 12 October
Rain. High 59°, low 45°.
Pressure29.91 inHg
Wind3.9 mph SW
Humidity81%
Visibility3.6 mi
Dew point47°
Tue, 1360° / 44°0.06
60 °
Etiwanda, Tuesday, 13 October
Light rain. High 60°, low 44°.
Pressure30.00 inHg
Wind4.1 mph S
Humidity78%
Visibility0.4 mi
Dew point49°
Wed, 1470° / 48°0
70 °
Etiwanda, Wednesday, 14 October
Clear. High 70°, low 48°.
Pressure30.03 inHg
Wind1.8 mph NE
Humidity33%
Visibility6.2 mi
Dew point37°
Thu, 1575° / 53°0
75 °
Etiwanda, Thursday, 15 October
Clear. High 75°, low 53°.
Pressure30.03 inHg
Wind8.9 mph NE
Humidity27%
Visibility—
Dew point33°
Fri, 1676° / 60°0
76 °
Etiwanda, Friday, 16 October
Clear. High 76°, low 60°.
Pressure29.97 inHg
Wind10.6 mph NE
Humidity27%
Visibility—
Dew point35°
Sat, 1791° / 74°0
91 °
Etiwanda, Saturday, 17 October
Clear. High 91°, low 74°.
Pressure30.06 inHg
Wind7.3 mph N
Humidity20%
Visibility—
Dew point38°
Sun, 1889° / 73°0
89 °
Etiwanda, Sunday, 18 October
Clear. High 89°, low 73°.
Pressure30.03 inHg
Wind7.7 mph SW
Humidity15%
Visibility—
Dew point30°
Mon, 1985° / 74°0
85 °
Etiwanda, Monday, 19 October
Mostly clear. High 85°, low 74°.
Pressure30.00 inHg
Wind9.8 mph SW
Humidity20%
Visibility—
Dew point36°
Tue, 2083° / 70°0
83 °
Etiwanda, Tuesday, 20 October
Clear. High 83°, low 70°.
Pressure29.94 inHg
Wind8.8 mph SW
Humidity29%
Visibility—
Dew point43°
Wed, 2184° / 69°0
84 °
Etiwanda, Wednesday, 21 October
Clear. High 84°, low 69°.
Pressure29.97 inHg
Wind9.2 mph SW
Humidity33%
Visibility—
Dew point46°
Thu, 2282° / 69°0
82 °
Etiwanda, Thursday, 22 October
Clear. High 82°, low 69°.
Pressure30.03 inHg
Wind7.6 mph SW
Humidity37%
Visibility—
Dew point48°
Fri, 2382° / 68°0
82 °
Etiwanda, Friday, 23 October
Clear. High 82°, low 68°.
Pressure30.03 inHg
Wind7.3 mph SW
Humidity28%
Visibility—
Dew point40°
Sat, 2485° / 70°0
85 °
Etiwanda, Saturday, 24 October
Clear. High 85°, low 70°.
Pressure29.97 inHg
Wind5 mph W
Humidity19%
Visibility—
Dew point33°
Sun, 2588° / 72°0
88 °
Etiwanda, Sunday, 25 October
Clear. High 88°, low 72°.
Pressure29.91 inHg
Wind6.4 mph SW
Humidity15%
Visibility—
Dew point30°
Mon, 2687° / 74°0
87 °
Etiwanda, Monday, 26 October
Overcast. High 87°, low 74°.
Pressure29.97 inHg
Wind9.6 mph W
Humidity28%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2775° / 54°0.06
75 °
Etiwanda, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high75°
Average low54°
Average precipitation0.06 in
Chance of precipitation12%
Record high92° (2008)
Record low42° (1996)
Wed, 2874° / 53°0.04
74 °
Etiwanda, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high74°
Average low53°
Average precipitation0.04 in
Chance of precipitation15%
Record high92° (2008)
Record low41° (1996)
Thu, 2973° / 52°0.02
73 °
Etiwanda, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high73°
Average low52°
Average precipitation0.02 in
Chance of precipitation10%
Record high89° (1965)
Record low32° (1971)
Fri, 3073° / 52°0.05
73 °
Etiwanda, Friday, 30 October
Climate normal for this date — 60-year average.
Average high73°
Average low52°
Average precipitation0.05 in
Chance of precipitation18%
Record high89° (1966)
Record low33° (1971)
Sat, 3174° / 51°0.02
74 °
Etiwanda, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high74°
Average low51°
Average precipitation0.02 in
Chance of precipitation8%
Record high89° (1966)
Record low38° (1972)
Sun, 0174° / 51°0.04
74 °
Etiwanda, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high74°
Average low51°
Average precipitation0.04 in
Chance of precipitation13%
Record high89° (1997)
Record low39° (1971)
Mon, 0274° / 51°0.04
74 °
Etiwanda, Monday, 2 November
Climate normal for this date — 60-year average.
Average high74°
Average low51°
Average precipitation0.04 in
Chance of precipitation18%
Record high89° (1997)
Record low41° (1971)
Tue, 0375° / 51°0.02
75 °
Etiwanda, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high75°
Average low51°
Average precipitation0.02 in
Chance of precipitation8%
Record high91° (2010)
Record low40° (1990)
Wed, 0474° / 52°0.03
74 °
Etiwanda, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high74°
Average low52°
Average precipitation0.03 in
Chance of precipitation12%
Record high91° (2020)
Record low36° (1994)
Thu, 0573° / 51°0.01
73 °
Etiwanda, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.01 in
Chance of precipitation7%
Record high92° (2020)
Record low39° (2015)
Fri, 0672° / 51°0.02
72 °
Etiwanda, Friday, 6 November
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.02 in
Chance of precipitation10%
Record high88° (2006)
Record low42° (2011)
Sat, 0771° / 50°0.09
71 °
Etiwanda, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.09 in
Chance of precipitation10%
Record high90° (2006)
Record low35° (2011)
Sun, 0871° / 50°0.1
71 °
Etiwanda, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.1 in
Chance of precipitation23%
Record high89° (2016)
Record low37° (2011)
Mon, 0970° / 49°0.06
70 °
Etiwanda, Monday, 9 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.06 in
Chance of precipitation17%
Record high89° (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 Etiwanda, 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 Etiwanda, 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.