Climate averages 1991–2020
Tucson weather
in October.
A hot, very dry month: the 6th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Tucson: daytime highs average 29.2°C and nights cool to about 14.9°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 14 mm of rain on roughly 2 days, which makes October a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 25 min on an average October day.
The nearest other city in this atlas is Nogales (102 km away). In October its highs average 26.4°C, 2.8°C cooler than Tucson, with 22 mm of rain.
Among the 498 cities listed in the United States, Tucson ranks 17th of 498 for the warmest October highs and joint 17th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Tucson is 7.8°C warmer than that mean.
From October to November, average highs fall by 6.5°C to 22.6°C, and monthly rainfall rises from 14 mm to 17 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tucson climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.6°C4.0°C | 4.0°C | 29 | 4.0 | 10.310 h |
| February | 19.3°C5.4°C | 5.4°C | 28 | 3.8 | 11.011 h |
| March | 23.3°C8.5°C | 8.5°C | 17 | 3.0 | 12.012 h |
| April | 27.6°C12.3°C | 12.3°C | 6.0 | 1.4 | 12.913 h |
| May | 32.4°C17.2°C | 17.2°C | 2.7 | 0.8 | 13.814 h |
| June | 37.5°C22.6°C | 22.6°C | 4.6 | 1.2 | 14.214 h |
| July | 36.8°C25.1°C | 25.1°C | 33 | 7.8 | 14.014 h |
| August | 36.0°C24.4°C | 24.4°C | 33 | 7.5 | 13.313 h |
| September | 34.1°C21.3°C | 21.3°C | 25 | 3.7 | 12.412 h |
| October, selected | 29.2°C14.9°C | 14.9°C | 14 | 2.3 | 11.411 h |
| November | 22.6°C8.5°C | 8.5°C | 17 | 2.5 | 10.511 h |
| December | 17.1°C3.8°C | 3.8°C | 31 | 4.3 | 10.110 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Nogales in OctoberMexico · 102 kmHigh 26.4°C · Low 11.9°C · 22 mm rain
- San Tan Valley in OctoberUnited States · 122 kmHigh 30.0°C · Low 15.9°C · 18 mm rain
- Chandler in OctoberUnited States · 148 kmHigh 30.9°C · Low 15.9°C · 16 mm rain
- Mesa in OctoberUnited States · 158 kmHigh 30.6°C · Low 15.6°C · 20 mm rain
- Tempe in OctoberUnited States · 161 kmHigh 30.7°C · Low 15.8°C · 20 mm rain
- Agua Prieta in OctoberMexico · 165 kmHigh 26.7°C · Low 12.9°C · 18 mm rain
- Scottsdale in OctoberUnited States · 170 kmHigh 30.4°C · Low 15.8°C · 20 mm rain
- Phoenix in OctoberUnited States · 173 kmHigh 30.8°C · Low 16.1°C · 20 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tucson) is explained once on the Tucson year overview and on the Sources, method and limits page.