The year at a glance
Averages from 30 years of climate history, 1991-2020
| Mesa | Metric | St. Louis |
|---|---|---|
| 306 days | Sunny daysclear or partly cloudy skies | 201 days |
| 11 in | Precipitationper year | 42 in |
| 33 days | Wet daysrain or snow per year | 118 days |
| 0 in | Snowfallper year | 14 in |
| 175 days | Hot daysabove 90 °F | 46 days |
| 11 days | Freezing nightsat or below 32 °F | 81 days |
| 36% | Humidityaverage relative | 67% |
| 72 °F | Average temperatureyear round | 58 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mesa high | 68 | 71 | 78 | 85 | 94 | 104 | 106 | 105 | 100 | 89 | 77 | 66 |
| St. Louis high | 41 | 46 | 56 | 68 | 77 | 86 | 90 | 88 | 81 | 70 | 56 | 45 |
| Mesa low | 41 | 43 | 47 | 53 | 61 | 70 | 78 | 78 | 71 | 59 | 47 | 40 |
| St. Louis low | 24 | 28 | 38 | 48 | 58 | 67 | 71 | 70 | 61 | 50 | 39 | 30 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mesa | 1.6 | 1.7 | 1.1 | 0.4 | 0.2 | 0.1 | 0.7 | 1.0 | 1.0 | 0.8 | 0.8 | 1.3 |
| St. Louis | 2.8 | 2.5 | 3.7 | 4.6 | 5.0 | 4.2 | 3.4 | 2.9 | 3.3 | 3.4 | 3.6 | 2.6 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mesa | 23 | 20 | 25 | 27 | 28 | 29 | 24 | 26 | 28 | 28 | 25 | 23 |
| St. Louis | 14 | 12 | 15 | 15 | 16 | 17 | 21 | 22 | 21 | 19 | 16 | 14 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Mesa vs another city
- Mesa vs Gilbert, AZ
- Mesa vs Apache Junction, AZ
- Mesa vs Chandler, AZ
- Mesa vs Tempe, AZ
- Mesa vs Queen Creek, AZ
- Mesa vs Fountain Hills, AZ
- Mesa vs New York, NY
- Mesa vs Los Angeles, CA
- Mesa vs Chicago, IL
- Mesa vs Houston, TX
- Mesa vs Phoenix, AZ
- Mesa vs Philadelphia, PA
St. Louis vs another city
- St. Louis vs Maplewood, MO
- St. Louis vs Clayton, MO
- St. Louis vs Richmond Heights, MO
- St. Louis vs University City, MO
- St. Louis vs Shrewsbury, MO
- St. Louis vs Brentwood, MO
- St. Louis vs New York, NY
- St. Louis vs Los Angeles, CA
- St. Louis vs Chicago, IL
- St. Louis vs Houston, TX
- St. Louis vs Phoenix, AZ
- St. Louis vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).