Monthly outlook for Tacna, AZ: average high 82.9°, average low 64.4°. That is 2.8° below the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.1 inches. The warmest day looks like 16 October (91.8°), the coolest 15 October (56.8°).
82.9°/64.4°
Average high / low
−2.8°
Below normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
83.5°
89.2°
-3.2°
23 October – 1 November
81.9°
84.6°
-1.5°
2 November – 11 November
at normal
81°
—
October records over 66 years
110.5°6 October 2024All-time high
35.8°30 October 1971All-time low
Wed, 1481° / 59°0
81 °
Tacna, Wednesday, 14 October
Clear. High 81°, low 59°.
Pressure30.03 inHg
Wind11.3 mph N
Humidity24%
Visibility6.2 mi
Dew point39°
Thu, 1588° / 57°0
88 °
Tacna, Thursday, 15 October
Clear. High 88°, low 57°.
Pressure29.97 inHg
Wind1.5 mph NW
Humidity22%
Visibility6.2 mi
Dew point41°
Fri, 1692° / 71°0
92 °
Tacna, Friday, 16 October
Clear. High 92°, low 71°.
Pressure30.00 inHg
Wind21.4 mph E
Humidity17%
Visibility6.2 mi
Dew point39°
Sat, 1777° / 68°0
77 °
Tacna, Saturday, 17 October
Overcast. High 77°, low 68°.
Pressure30.03 inHg
Wind15.3 mph NE
Humidity34%
Visibility—
Dew point44°
Sun, 1887° / 64°0
87 °
Tacna, Sunday, 18 October
Clear. High 87°, low 64°.
Pressure29.97 inHg
Wind8.2 mph NE
Humidity32%
Visibility—
Dew point46°
Mon, 1988° / 73°0
88 °
Tacna, Monday, 19 October
Clear. High 88°, low 73°.
Pressure29.91 inHg
Wind9.4 mph E
Humidity29%
Visibility—
Dew point47°
Tue, 2085° / 65°0
85 °
Tacna, Tuesday, 20 October
Clear. High 85°, low 65°.
Pressure29.71 inHg
Wind26.5 mph W
Humidity44%
Visibility—
Dew point55°
Wed, 2177° / 62°0
77 °
Tacna, Wednesday, 21 October
Clear. High 77°, low 62°.
Pressure29.85 inHg
Wind17.3 mph NW
Humidity20%
Visibility—
Dew point29°
Thu, 2280° / 63°0
80 °
Tacna, Thursday, 22 October
Clear. High 80°, low 63°.
Pressure30.00 inHg
Wind10.6 mph N
Humidity13%
Visibility—
Dew point20°
Fri, 2383° / 62°0
83 °
Tacna, Friday, 23 October
Clear. High 83°, low 62°.
Pressure29.94 inHg
Wind3.2 mph N
Humidity14%
Visibility—
Dew point22°
Sat, 2484° / 65°0
84 °
Tacna, Saturday, 24 October
Clear. High 84°, low 65°.
Pressure30.03 inHg
Wind19.1 mph N
Humidity15%
Visibility—
Dew point27°
Sun, 2581° / 60°0
81 °
Tacna, Sunday, 25 October
Clear. High 81°, low 60°.
Pressure29.97 inHg
Wind8 mph NE
Humidity15%
Visibility—
Dew point23°
Mon, 2682° / 61°0
82 °
Tacna, Monday, 26 October
Clear. High 82°, low 61°.
Pressure29.74 inHg
Wind10.2 mph S
Humidity13%
Visibility—
Dew point19°
Tue, 2780° / 66°0
80 °
Tacna, Tuesday, 27 October
Clear. High 80°, low 66°.
Pressure29.80 inHg
Wind25.9 mph S
Humidity31%
Visibility—
Dew point44°
Wed, 2882° / 68°0
82 °
Tacna, Wednesday, 28 October
Clear. High 82°, low 68°.
Pressure29.97 inHg
Wind17.3 mph S
Humidity42%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2983° / 59°0
83 °
Tacna, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high83°
Average low59°
Average precipitation0 in
Chance of precipitation3%
Record high95° (2025)
Record low44° (1971)
Fri, 3082° / 59°0
82 °
Tacna, Friday, 30 October
Climate normal for this date — 60-year average.
Average high82°
Average low59°
Average precipitation0 in
Chance of precipitation2%
Record high95° (1966)
Record low36° (1971)
Sat, 3182° / 58°0
82 °
Tacna, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high82°
Average low58°
Average precipitation0 in
Chance of precipitation2%
Record high96° (1988)
Record low39° (2019)
Sun, 0183° / 58°0.01
83 °
Tacna, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high83°
Average low58°
Average precipitation0.01 in
Chance of precipitation2%
Record high96° (2008)
Record low42° (2019)
Mon, 0283° / 58°0
83 °
Tacna, Monday, 2 November
Climate normal for this date — 60-year average.
Average high83°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high93° (2020)
Record low43° (1971)
Tue, 0383° / 58°0
83 °
Tacna, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high83°
Average low58°
Average precipitation0 in
Chance of precipitation2%
Record high94° (2010)
Record low47° (2004)
Wed, 0482° / 58°0
82 °
Tacna, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high82°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high92° (2020)
Record low46° (2022)
Thu, 0582° / 56°0
82 °
Tacna, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0 in
Chance of precipitation3%
Record high97° (2020)
Record low46° (2015)
Fri, 0682° / 57°0.01
82 °
Tacna, Friday, 6 November
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0.01 in
Chance of precipitation2%
Record high92° (2020)
Record low48° (2011)
Sat, 0781° / 57°0.01
81 °
Tacna, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high81°
Average low57°
Average precipitation0.01 in
Chance of precipitation3%
Record high91° (2006)
Record low47° (2024)
Sun, 0880° / 56°0.01
80 °
Tacna, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.01 in
Chance of precipitation5%
Record high92° (2016)
Record low46° (2011)
Mon, 0980° / 56°0
80 °
Tacna, Monday, 9 November
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high90° (2025)
Record low39° (2024)
Tue, 1079° / 56°0
79 °
Tacna, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0 in
Chance of precipitation7%
Record high91° (2025)
Record low41° (2020)
Wed, 1179° / 56°0.01
79 °
Tacna, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.01 in
Chance of precipitation7%
Record high90° (2013)
Record low42° (2022)
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 Tacna, 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 Tacna, 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.