Monthly outlook for Arivaca, AZ: average high 73.8°, average low 54.3°. That is 2.3° below the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 24 October (81.3°), the coolest 15 October (46.5°).
73.8°/54.3°
Average high / low
−2.3°
Below normal
2 / 1
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
75.6°
79°
-1.9°
25 October – 3 November
70.7°
75.5°
-2.7°
4 November – 13 November
at normal
73.1°
—
October records over 66 years
100.8°6 October 2024All-time high
31.8°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Casa Piedra (13 mi).
Fri, 1679° / 61°0
79 °
Arivaca, Friday, 16 October
Clear. High 79°, low 61°.
Pressure30.09 inHg
Wind26.4 mph E
Humidity22%
Visibility6.2 mi
Dew point33°
Sat, 1772° / 55°0.26
72 °
Arivaca, Saturday, 17 October
Rain. High 72°, low 55°.
Pressure30.09 inHg
Wind12.5 mph E
Humidity28%
Visibility6.2 mi
Dew point35°
Sun, 1880° / 56°0.05
80 °
Arivaca, Sunday, 18 October
Light rain. High 80°, low 56°.
Pressure29.97 inHg
Wind11.6 mph S
Humidity39%
Visibility6.2 mi
Dew point51°
Mon, 1978° / 58°0
78 °
Arivaca, Monday, 19 October
Clear. High 78°, low 58°.
Pressure29.94 inHg
Wind11.5 mph SW
Humidity35%
Visibility6.2 mi
Dew point47°
Tue, 2081° / 59°0
81 °
Arivaca, Tuesday, 20 October
Partly cloudy. High 81°, low 59°.
Pressure29.94 inHg
Wind15.9 mph S
Humidity43%
Visibility—
Dew point51°
Wed, 2174° / 60°0
74 °
Arivaca, Wednesday, 21 October
Partly cloudy. High 74°, low 60°.
Pressure29.88 inHg
Wind20.6 mph SW
Humidity51%
Visibility—
Dew point52°
Thu, 2264° / 52°0.01
64 °
Arivaca, Thursday, 22 October
Light rain. High 64°, low 52°.
Pressure29.94 inHg
Wind20.7 mph SW
Humidity54%
Visibility—
Dew point45°
Fri, 2368° / 50°0
68 °
Arivaca, Friday, 23 October
Clear. High 68°, low 50°.
Pressure30.09 inHg
Wind13.1 mph NE
Humidity38%
Visibility—
Dew point35°
Sat, 2481° / 53°0
81 °
Arivaca, Saturday, 24 October
Clear. High 81°, low 53°.
Pressure30.00 inHg
Wind7.9 mph SE
Humidity22%
Visibility—
Dew point30°
Sun, 2577° / 60°0
77 °
Arivaca, Sunday, 25 October
Partly cloudy. High 77°, low 60°.
Pressure29.94 inHg
Wind25.5 mph S
Humidity27%
Visibility—
Dew point38°
Mon, 2670° / 53°0
70 °
Arivaca, Monday, 26 October
Partly cloudy. High 70°, low 53°.
Pressure29.91 inHg
Wind30.4 mph SW
Humidity56%
Visibility—
Dew point50°
Tue, 2765° / 50°0
65 °
Arivaca, Tuesday, 27 October
Mostly clear. High 65°, low 50°.
Pressure30.00 inHg
Wind12.7 mph SW
Humidity45%
Visibility—
Dew point39°
Wed, 2871° / 51°0
71 °
Arivaca, Wednesday, 28 October
Overcast. High 71°, low 51°.
Pressure29.97 inHg
Wind11.6 mph SW
Humidity33%
Visibility—
Dew point34°
Thu, 2970° / 52°0
70 °
Arivaca, Thursday, 29 October
Mostly clear. High 70°, low 52°.
Pressure29.97 inHg
Wind12.8 mph SW
Humidity28%
Visibility—
Dew point31°
Fri, 3072° / 51°0
72 °
Arivaca, Friday, 30 October
Partly cloudy. High 72°, low 51°.
Pressure30.06 inHg
Wind5.1 mph NE
Humidity25%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3174° / 50°0.01
74 °
Arivaca, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high74°
Average low50°
Average precipitation0.01 in
Chance of precipitation5%
Record high86° (2008)
Record low33° (1972)
Sun, 0174° / 49°0.02
74 °
Arivaca, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high74°
Average low49°
Average precipitation0.02 in
Chance of precipitation2%
Record high88° (2020)
Record low31° (1972)
Mon, 0275° / 49°0
75 °
Arivaca, Monday, 2 November
Climate normal for this date — 60-year average.
Average high75°
Average low49°
Average precipitation0 in
Chance of precipitation3%
Record high88° (2020)
Record low37° (2000)
Tue, 0375° / 50°0.01
75 °
Arivaca, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high75°
Average low50°
Average precipitation0.01 in
Chance of precipitation10%
Record high88° (2009)
Record low38° (2004)
Wed, 0474° / 49°0.02
74 °
Arivaca, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high74°
Average low49°
Average precipitation0.02 in
Chance of precipitation7%
Record high86° (2020)
Record low37° (1974)
Thu, 0575° / 49°0.01
75 °
Arivaca, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high75°
Average low49°
Average precipitation0.01 in
Chance of precipitation7%
Record high89° (2020)
Record low38° (1994)
Fri, 0675° / 49°0.02
75 °
Arivaca, Friday, 6 November
Climate normal for this date — 60-year average.
Average high75°
Average low49°
Average precipitation0.02 in
Chance of precipitation5%
Record high86° (2020)
Record low38° (1974)
Sat, 0774° / 50°0.02
74 °
Arivaca, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high74°
Average low50°
Average precipitation0.02 in
Chance of precipitation10%
Record high85° (2012)
Record low35° (2000)
Sun, 0873° / 49°0.02
73 °
Arivaca, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high73°
Average low49°
Average precipitation0.02 in
Chance of precipitation8%
Record high83° (1991)
Record low30° (2000)
Mon, 0973° / 48°0.01
73 °
Arivaca, Monday, 9 November
Climate normal for this date — 60-year average.
Average high73°
Average low48°
Average precipitation0.01 in
Chance of precipitation7%
Record high85° (2025)
Record low34° (2000)
Tue, 1073° / 48°0.01
73 °
Arivaca, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high73°
Average low48°
Average precipitation0.01 in
Chance of precipitation5%
Record high85° (1973)
Record low34° (1998)
Wed, 1172° / 47°0.03
72 °
Arivaca, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high72°
Average low47°
Average precipitation0.03 in
Chance of precipitation12%
Record high86° (1973)
Record low37° (2012)
Thu, 1272° / 49°0.05
72 °
Arivaca, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.05 in
Chance of precipitation12%
Record high85° (1967)
Record low35° (1982)
Fri, 1372° / 47°0.02
72 °
Arivaca, Friday, 13 November
Climate normal for this date — 60-year average.
Average high72°
Average low47°
Average precipitation0.02 in
Chance of precipitation8%
Record high86° (2017)
Record low33° (2000)
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 Arivaca, 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 Arivaca, 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.