Monthly outlook for Arivaca, AZ: average high 73.6°, average low 57.3°. That is 2.6° below the climate normal for October. Precipitation is expected on 7 days (about 1.8 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 29 October (79°), the coolest 23 October (50.5°).
73.6°/57.3°
Average high / low
−2.6°
Below normal
7 / 1
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
71.9°
79.3°
-4.1°
24 October – 2 November
76.5°
75.8°
+0.4°
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, 1579° / 54°0
79 °
Arivaca, Thursday, 15 October
Clear. High 79°, low 54°.
Pressure29.94 inHg
Wind6.3 mph NE
Humidity29%
Visibility6.2 mi
Dew point40°
Fri, 1676° / 62°0.01
76 °
Arivaca, Friday, 16 October
Light rain. High 76°, low 62°.
Pressure30.12 inHg
Wind24.6 mph E
Humidity21%
Visibility6.2 mi
Dew point29°
Sat, 1770° / 55°0.31
70 °
Arivaca, Saturday, 17 October
Light rain. High 70°, low 55°.
Pressure30.09 inHg
Wind16.2 mph E
Humidity24%
Visibility6.2 mi
Dew point32°
Sun, 1866° / 55°0.41
66 °
Arivaca, Sunday, 18 October
Rain. High 66°, low 55°.
Pressure30.09 inHg
Wind7.7 mph SE
Humidity76%
Visibility—
Dew point53°
Mon, 1976° / 59°0.09
76 °
Arivaca, Monday, 19 October
Light rain. High 76°, low 59°.
Pressure30.00 inHg
Wind12.2 mph S
Humidity44%
Visibility—
Dew point49°
Tue, 2076° / 61°0.53
76 °
Arivaca, Tuesday, 20 October
Light rain. High 76°, low 61°.
Pressure29.91 inHg
Wind15.7 mph S
Humidity57%
Visibility—
Dew point57°
Wed, 2169° / 61°0.27
69 °
Arivaca, Wednesday, 21 October
Light rain. High 69°, low 61°.
Pressure29.88 inHg
Wind22.8 mph S
Humidity75%
Visibility—
Dew point60°
Thu, 2270° / 55°0.01
70 °
Arivaca, Thursday, 22 October
Light rain. High 70°, low 55°.
Pressure29.94 inHg
Wind19.3 mph SW
Humidity55%
Visibility—
Dew point49°
Fri, 2368° / 51°0
68 °
Arivaca, Friday, 23 October
Clear. High 68°, low 51°.
Pressure30.03 inHg
Wind10.4 mph N
Humidity38%
Visibility—
Dew point35°
Sat, 2476° / 52°0
76 °
Arivaca, Saturday, 24 October
Clear. High 76°, low 52°.
Pressure30.06 inHg
Wind10.9 mph E
Humidity26%
Visibility—
Dew point31°
Sun, 2572° / 57°0
72 °
Arivaca, Sunday, 25 October
Overcast. High 72°, low 57°.
Pressure30.06 inHg
Wind18.9 mph E
Humidity43%
Visibility—
Dew point43°
Mon, 2678° / 56°0.02
78 °
Arivaca, Monday, 26 October
Light rain. High 78°, low 56°.
Pressure29.97 inHg
Wind13.6 mph SW
Humidity48%
Visibility—
Dew point49°
Tue, 2776° / 60°0
76 °
Arivaca, Tuesday, 27 October
Clear. High 76°, low 60°.
Pressure29.91 inHg
Wind10.2 mph SW
Humidity46%
Visibility—
Dew point49°
Wed, 2879° / 62°0.05
79 °
Arivaca, Wednesday, 28 October
Light rain. High 79°, low 62°.
Pressure29.94 inHg
Wind7.6 mph SW
Humidity42%
Visibility—
Dew point48°
Thu, 2979° / 64°0.12
79 °
Arivaca, Thursday, 29 October
Light rain. High 79°, low 64°.
Pressure29.97 inHg
Wind13.6 mph S
Humidity47%
Visibility—
Dew point53°
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.