Climate averages 1991–2020
San Tan Valley weather
in March.
A warm, fairly dry month: the 8th warmest and the joint 8th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
March is a warm month in San Tan Valley: daytime highs average 23.8°C and nights cool to about 8.9°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 27 mm of rain on roughly 3 days, which makes March a fairly dry month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average March day.
The nearest other city in this atlas is Chandler (32 km away). In March its highs average 24.7°C, 0.9°C warmer than San Tan Valley, with 24 mm of rain.
Among the 498 cities listed in the United States, San Tan Valley ranks 44th of 498 for the warmest March highs and joint 26th of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; San Tan Valley is 8.9°C warmer than that mean.
From March to April, average highs rise by 4.4°C to 28.2°C, and monthly rainfall falls from 27 mm to 8.4 mm.
The annual picture
March 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
San Tan Valley climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.2°C4.9°C | 4.9°C | 38 | 4.2 | 10.210 h |
| February | 19.8°C6.3°C | 6.3°C | 41 | 4.4 | 11.011 h |
| March, selected | 23.8°C8.9°C | 8.9°C | 27 | 3.0 | 12.012 h |
| April | 28.2°C12.5°C | 12.5°C | 8.4 | 1.4 | 13.013 h |
| May | 33.2°C17.4°C | 17.4°C | 4.1 | 0.7 | 13.914 h |
| June | 38.7°C22.6°C | 22.6°C | 2.0 | 0.6 | 14.314 h |
| July | 39.3°C26.5°C | 26.5°C | 21 | 3.7 | 14.114 h |
| August | 38.4°C26.2°C | 26.2°C | 27 | 4.9 | 13.413 h |
| September | 35.9°C22.7°C | 22.7°C | 26 | 3.2 | 12.412 h |
| October | 30.0°C15.9°C | 15.9°C | 18 | 2.4 | 11.411 h |
| November | 23.3°C9.6°C | 9.6°C | 19 | 2.4 | 10.510 h |
| December | 17.6°C4.8°C | 4.8°C | 34 | 4.3 | 10.010 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
March in nearby cities
- Chandler in MarchUnited States · 32 kmHigh 24.7°C · Low 9.0°C · 24 mm rain
- Mesa in MarchUnited States · 38 kmHigh 24.3°C · Low 8.6°C · 29 mm rain
- Tempe in MarchUnited States · 43 kmHigh 24.5°C · Low 9.0°C · 26 mm rain
- Scottsdale in MarchUnited States · 49 kmHigh 24.2°C · Low 9.0°C · 26 mm rain
- Phoenix in MarchUnited States · 58 kmHigh 24.7°C · Low 9.3°C · 26 mm rain
- Glendale (Arizona), United States in MarchUnited States · 72 kmHigh 24.5°C · Low 9.5°C · 23 mm rain
- Peoria (Arizona), United States in MarchUnited States · 79 kmHigh 24.3°C · Low 9.5°C · 23 mm rain
- Avondale in MarchUnited States · 81 kmHigh 25.2°C · Low 10.0°C · 23 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 San Tan Valley) is explained once on the San Tan Valley year overview and on the Sources, method and limits page.