Monthly outlook for Tacna, AZ: average high 83.7°, average low 66.7°. That is 1.5° 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 20 October (90.7°), the coolest 28 October (63°).
83.7°/66.7°
Average high / low
−1.5°
Below normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
84.6°
87.9°
-1.9°
26 October – 4 November
82.3°
83.3°
-0.6°
5 November – 14 November
at normal
79.7°
—
October records over 66 years
110.5°6 October 2024All-time high
35.8°30 October 1971All-time low
Sat, 1780° / 71°0.01
80 °
Tacna, Saturday, 17 October
Light rain. High 80°, low 71°.
Pressure30.06 inHg
Wind14.2 mph E
Humidity17%
Visibility6.2 mi
Dew point32°
Sun, 1887° / 66°0
87 °
Tacna, Sunday, 18 October
Clear. High 87°, low 66°.
Pressure29.97 inHg
Wind10.4 mph NE
Humidity29%
Visibility6.2 mi
Dew point47°
Mon, 1989° / 65°0
89 °
Tacna, Monday, 19 October
Clear. High 89°, low 65°.
Pressure29.88 inHg
Wind2.7 mph E
Humidity31%
Visibility6.2 mi
Dew point52°
Tue, 2091° / 68°0
91 °
Tacna, Tuesday, 20 October
Clear. High 91°, low 68°.
Pressure29.83 inHg
Wind2.8 mph SE
Humidity36%
Visibility6.2 mi
Dew point56°
Wed, 2190° / 69°0
90 °
Tacna, Wednesday, 21 October
Clear. High 90°, low 69°.
Pressure29.80 inHg
Wind18.2 mph S
Humidity34%
Visibility—
Dew point53°
Thu, 2278° / 66°0
78 °
Tacna, Thursday, 22 October
Clear. High 78°, low 66°.
Pressure29.91 inHg
Wind12 mph W
Humidity44%
Visibility—
Dew point50°
Fri, 2378° / 65°0
78 °
Tacna, Friday, 23 October
Clear. High 78°, low 65°.
Pressure29.91 inHg
Wind10.8 mph W
Humidity33%
Visibility—
Dew point42°
Sat, 2479° / 64°0
79 °
Tacna, Saturday, 24 October
Clear. High 79°, low 64°.
Pressure30.00 inHg
Wind4.4 mph W
Humidity30%
Visibility—
Dew point39°
Sun, 2583° / 65°0
83 °
Tacna, Sunday, 25 October
Overcast. High 83°, low 65°.
Pressure30.00 inHg
Wind6.8 mph NE
Humidity24%
Visibility—
Dew point37°
Mon, 2685° / 68°0
85 °
Tacna, Monday, 26 October
Overcast. High 85°, low 68°.
Pressure29.77 inHg
Wind5.3 mph W
Humidity19%
Visibility—
Dew point32°
Tue, 2779° / 64°0
79 °
Tacna, Tuesday, 27 October
Clear. High 79°, low 64°.
Pressure29.77 inHg
Wind14.9 mph W
Humidity26%
Visibility—
Dew point35°
Wed, 2881° / 63°0
81 °
Tacna, Wednesday, 28 October
Mostly clear. High 81°, low 63°.
Pressure29.94 inHg
Wind7.5 mph SW
Humidity21%
Visibility—
Dew point32°
Thu, 2984° / 67°0
84 °
Tacna, Thursday, 29 October
Clear. High 84°, low 67°.
Pressure30.00 inHg
Wind4.1 mph W
Humidity40%
Visibility—
Dew point50°
Fri, 3086° / 69°0
86 °
Tacna, Friday, 30 October
Clear. High 86°, low 69°.
Pressure29.94 inHg
Wind10.8 mph SW
Humidity27%
Visibility—
Dew point43°
Sat, 3178° / 66°0
78 °
Tacna, Saturday, 31 October
Partly cloudy. High 78°, low 66°.
Pressure29.91 inHg
Wind15.4 mph W
Humidity35%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Thu, 1278° / 55°0.02
78 °
Tacna, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.02 in
Chance of precipitation8%
Record high93° (1999)
Record low44° (2020)
Fri, 1378° / 55°0.01
78 °
Tacna, Friday, 13 November
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.01 in
Chance of precipitation3%
Record high92° (1999)
Record low43° (1972)
Sat, 1478° / 54°0
78 °
Tacna, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high78°
Average low54°
Average precipitation0 in
Chance of precipitation2%
Record high91° (1999)
Record low43° (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 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.