Monthly outlook for Arivaca, AZ: average high 73.5°, average low 56.9°. That is 2.7° below the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 21 October (78.4°), the coolest 23 October (50.5°).
73.5°/56.9°
Average high / low
−2.7°
Below normal
4 / 1
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
73.3°
79.3°
-3.3°
24 October – 2 November
73.9°
75.8°
-1.1°
3 November – 12 November
at normal
73.4°
—
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).
Thu, 1578° / 54°0
78 °
Arivaca, Thursday, 15 October
Clear. High 78°, low 54°.
Pressure29.94 inHg
Wind6.4 mph NE
Humidity31%
Visibility6.2 mi
Dew point42°
Fri, 1675° / 62°0
75 °
Arivaca, Friday, 16 October
Overcast. High 75°, low 62°.
Pressure30.12 inHg
Wind23.6 mph E
Humidity22%
Visibility6.2 mi
Dew point31°
Sat, 1766° / 57°0.17
66 °
Arivaca, Saturday, 17 October
Light rain. High 66°, low 57°.
Pressure30.12 inHg
Wind17 mph E
Humidity36%
Visibility6.2 mi
Dew point35°
Sun, 1873° / 56°0.09
73 °
Arivaca, Sunday, 18 October
Light rain. High 73°, low 56°.
Pressure30.06 inHg
Wind15.7 mph S
Humidity60%
Visibility—
Dew point50°
Mon, 1975° / 58°0.01
75 °
Arivaca, Monday, 19 October
Light rain. High 75°, low 58°.
Pressure29.97 inHg
Wind13.1 mph S
Humidity41%
Visibility—
Dew point47°
Tue, 2077° / 63°0.02
77 °
Arivaca, Tuesday, 20 October
Light rain. High 77°, low 63°.
Pressure29.91 inHg
Wind13.8 mph S
Humidity43%
Visibility—
Dew point51°
Wed, 2178° / 63°0
78 °
Arivaca, Wednesday, 21 October
Overcast. High 78°, low 63°.
Pressure29.91 inHg
Wind14.1 mph S
Humidity42%
Visibility—
Dew point48°
Thu, 2270° / 54°0.08
70 °
Arivaca, Thursday, 22 October
Light rain. High 70°, low 54°.
Pressure29.83 inHg
Wind22.7 mph SW
Humidity61%
Visibility—
Dew point55°
Fri, 2368° / 50°0
68 °
Arivaca, Friday, 23 October
Clear. High 68°, low 50°.
Pressure29.94 inHg
Wind7.5 mph NW
Humidity34%
Visibility—
Dew point33°
Sat, 2471° / 53°0
71 °
Arivaca, Saturday, 24 October
Clear. High 71°, low 53°.
Pressure29.97 inHg
Wind9.6 mph N
Humidity32%
Visibility—
Dew point34°
Sun, 2574° / 54°0
74 °
Arivaca, Sunday, 25 October
Overcast. High 74°, low 54°.
Pressure29.97 inHg
Wind5.9 mph SW
Humidity30%
Visibility—
Dew point35°
Mon, 2676° / 57°0
76 °
Arivaca, Monday, 26 October
Clear. High 76°, low 57°.
Pressure29.88 inHg
Wind9.8 mph SW
Humidity29%
Visibility—
Dew point36°
Tue, 2776° / 56°0
76 °
Arivaca, Tuesday, 27 October
Clear. High 76°, low 56°.
Pressure29.80 inHg
Wind6.6 mph W
Humidity22%
Visibility—
Dew point29°
Wed, 2875° / 60°0.07
75 °
Arivaca, Wednesday, 28 October
Light rain. High 75°, low 60°.
Pressure29.88 inHg
Wind18.9 mph SW
Humidity24%
Visibility—
Dew point33°
Thu, 2971° / 56°0.04
71 °
Arivaca, Thursday, 29 October
Light rain. High 71°, low 56°.
Pressure29.91 inHg
Wind14.6 mph S
Humidity46%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3074° / 51°0.01
74 °
Arivaca, Friday, 30 October
Climate normal for this date — 60-year average.
Average high74°
Average low51°
Average precipitation0.01 in
Chance of precipitation5%
Record high87° (2001)
Record low32° (1971)
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)
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.