Sierra Vista Climate by Month
Sierra Vista, Arizona, United States
Very hot summers and cool winters, with little rain, mostly from July to November.
The climate in Sierra Vista is one of very hot summers and cool winters, with little rain, mostly from July to November. Afternoon highs range from 62°F (17°C) in January to 96°F (36°C) in June, and January nights average 35°F (2°C). It gets only 14 in (345 mm) of rain a year. April and May are almost completely dry. The air is dry, averaging 33% relative humidity.
- Warmest month
- 96°F(36°C)
- Average high, June
- Coldest nights
- 35°F(2°C)
- Average low, January
- Rain per year
- 14 in(345 mm)
- Wettest: July
- Humidity
- 33%
- Sunniest: June
Best and worst months in Sierra Vista
Best for weatherThe most comfortable weather comes in March, April and November, with highs around 73°F (23°C) and almost no rain.
Least pleasantJuly is the least pleasant month: it's the hottest, with highs of 94°F (34°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Sierra Vista weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 62°F(17°C) | 35°F(2°C) | 0.9 in(23 mm) | 43% | 3.5 |
| FebFebruary | 65°F(18°C) | 37°F(3°C) | 0.7 in(18 mm) | 39% | 4.1 |
| MarMarchBest | 71°F(22°C) | 42°F(6°C) | 0.4 in(11 mm) | 32% | 5.6 |
| AprAprilBest | 79°F(26°C) | 47°F(8°C) | 0.2 in(5 mm) | 20% | 6.8 |
| MayMay | 87°F(31°C) | 56°F(13°C) | 0.1 in(3 mm) | 19% | 7.5 |
| JunJune | 96°F(36°C) | 66°F(19°C) | 0.4 in(10 mm) | 19% | 7.6 |
| JulJuly | 94°F(34°C) | 69°F(21°C) | 3.5 in(90 mm) | 38% | 6.5 |
| AugAugust | 91°F(33°C) | 67°F(20°C) | 3.1 in(78 mm) | 44% | 6.0 |
| SepSeptember | 89°F(32°C) | 63°F(17°C) | 1.9 in(47 mm) | 39% | 5.5 |
| OctOctober | 81°F(27°C) | 52°F(11°C) | 0.7 in(18 mm) | 31% | 4.9 |
| NovNovemberBest | 70°F(21°C) | 42°F(5°C) | 0.6 in(16 mm) | 33% | 3.8 |
| DecDecember | 62°F(17°C) | 35°F(2°C) | 1.0 in(26 mm) | 43% | 3.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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