Monthly outlook for Summerhaven, AZ: average high 61.5°, average low 43.9°. That is 9.5° below the climate normal for October. Precipitation is expected on 6 days (about 0.6 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 18 October (70.6°), the coolest 25 October (34.6°).
61.5°/43.9°
Average high / low
−9.5°
Below normal
6 / 2
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
61.4°
80°
-10.4°
26 October – 4 November
61.7°
76°
-7.9°
5 November – 14 November
at normal
73.4°
—
October records over 66 years
101.3°1 October 2024All-time high
30.4°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Catalina (8 mi).
Sat, 1763° / 37°0.12
63 °
Summerhaven, Saturday, 17 October
Rain. High 63°, low 37°.
Pressure30.18 inHg
Wind6.6 mph SE
Humidity35%
Visibility6.2 mi
Dew point31°
Sun, 1871° / 49°0.12
71 °
Summerhaven, Sunday, 18 October
Light rain. High 71°, low 49°.
Pressure30.06 inHg
Wind2.1 mph SW
Humidity44%
Visibility6.2 mi
Dew point47°
Mon, 1967° / 56°0.16
67 °
Summerhaven, Monday, 19 October
Light rain. High 67°, low 56°.
Pressure30.00 inHg
Wind5.3 mph SW
Humidity60%
Visibility6.2 mi
Dew point52°
Tue, 2068° / 54°0.07
68 °
Summerhaven, Tuesday, 20 October
Light rain. High 68°, low 54°.
Pressure29.94 inHg
Wind10.9 mph SW
Humidity46%
Visibility—
Dew point44°
Wed, 2165° / 47°0.04
65 °
Summerhaven, Wednesday, 21 October
Light rain. High 65°, low 47°.
Pressure29.94 inHg
Wind15 mph SW
Humidity57%
Visibility—
Dew point47°
Thu, 2253° / 40°0.06
53 °
Summerhaven, Thursday, 22 October
Light rain. High 53°, low 40°.
Pressure29.94 inHg
Wind18.4 mph W
Humidity68%
Visibility—
Dew point38°
Fri, 2351° / 37°0
51 °
Summerhaven, Friday, 23 October
Clear. High 51°, low 37°.
Pressure30.06 inHg
Wind6.6 mph NW
Humidity40%
Visibility—
Dew point23°
Sat, 2457° / 39°0
57 °
Summerhaven, Saturday, 24 October
Clear. High 57°, low 39°.
Pressure30.03 inHg
Wind7.8 mph NW
Humidity31%
Visibility—
Dew point21°
Sun, 2553° / 35°0
53 °
Summerhaven, Sunday, 25 October
Clear. High 53°, low 35°.
Pressure30.12 inHg
Wind14.9 mph NE
Humidity16%
Visibility—
Dew point3°
Mon, 2658° / 40°0
58 °
Summerhaven, Monday, 26 October
Clear. High 58°, low 40°.
Pressure29.94 inHg
Wind9.3 mph E
Humidity21%
Visibility—
Dew point11°
Tue, 2761° / 43°0
61 °
Summerhaven, Tuesday, 27 October
Clear. High 61°, low 43°.
Pressure29.85 inHg
Wind6.9 mph W
Humidity15%
Visibility—
Dew point10°
Wed, 2862° / 44°0
62 °
Summerhaven, Wednesday, 28 October
Clear. High 62°, low 44°.
Pressure30.06 inHg
Wind5 mph SW
Humidity13%
Visibility—
Dew point7°
Thu, 2964° / 45°0
64 °
Summerhaven, Thursday, 29 October
Clear. High 64°, low 45°.
Pressure30.03 inHg
Wind5.9 mph SW
Humidity14%
Visibility—
Dew point10°
Fri, 3065° / 47°0
65 °
Summerhaven, Friday, 30 October
Clear. High 65°, low 47°.
Pressure30.06 inHg
Wind5.7 mph SW
Humidity19%
Visibility—
Dew point18°
Sat, 3160° / 46°0
60 °
Summerhaven, Saturday, 31 October
Clear. High 60°, low 46°.
Pressure30.03 inHg
Wind2 mph W
Humidity24%
Visibility—
Dew point21°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0175° / 52°0.02
75 °
Summerhaven, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high75°
Average low52°
Average precipitation0.02 in
Chance of precipitation3%
Record high88° (2008)
Record low33° (1972)
Mon, 0276° / 52°0.02
76 °
Summerhaven, Monday, 2 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.02 in
Chance of precipitation7%
Record high88° (2020)
Record low38° (1972)
Tue, 0375° / 52°0.03
75 °
Summerhaven, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high75°
Average low52°
Average precipitation0.03 in
Chance of precipitation10%
Record high89° (2009)
Record low40° (2004)
Wed, 0475° / 52°0.04
75 °
Summerhaven, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high75°
Average low52°
Average precipitation0.04 in
Chance of precipitation10%
Record high87° (2009)
Record low38° (2022)
Thu, 0575° / 51°0.01
75 °
Summerhaven, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high75°
Average low51°
Average precipitation0.01 in
Chance of precipitation3%
Record high89° (2020)
Record low40° (1994)
Fri, 0676° / 52°0.02
76 °
Summerhaven, Friday, 6 November
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.02 in
Chance of precipitation8%
Record high88° (2020)
Record low41° (1992)
Sat, 0774° / 52°0.02
74 °
Summerhaven, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high74°
Average low52°
Average precipitation0.02 in
Chance of precipitation10%
Record high87° (2012)
Record low35° (2024)
Sun, 0874° / 51°0.02
74 °
Summerhaven, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high74°
Average low51°
Average precipitation0.02 in
Chance of precipitation8%
Record high85° (2005)
Record low33° (2000)
Mon, 0973° / 50°0.02
73 °
Summerhaven, Monday, 9 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.02 in
Chance of precipitation10%
Record high86° (1973)
Record low35° (2000)
Tue, 1073° / 50°0.02
73 °
Summerhaven, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.02 in
Chance of precipitation8%
Record high85° (1973)
Record low36° (1998)
Wed, 1173° / 50°0.03
73 °
Summerhaven, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.03 in
Chance of precipitation12%
Record high86° (1999)
Record low39° (1992)
Thu, 1272° / 50°0.07
72 °
Summerhaven, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.07 in
Chance of precipitation13%
Record high84° (1999)
Record low36° (1982)
Fri, 1372° / 49°0.03
72 °
Summerhaven, Friday, 13 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.03 in
Chance of precipitation10%
Record high84° (1967)
Record low33° (2000)
Sat, 1472° / 49°0.02
72 °
Summerhaven, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.02 in
Chance of precipitation12%
Record high86° (1999)
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 Summerhaven, AZ 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 Summerhaven, AZ 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.