The year at a glance
Averages from 30 years of climate history, 1991-2020
| Rolla | Metric | Sullivan |
|---|---|---|
| 206 days | Sunny daysclear or partly cloudy skies | 204 days |
| 41 in | Precipitationper year | 41 in |
| 119 days | Wet daysrain or snow per year | 120 days |
| 17 in | Snowfallper year | 10 in |
| 43 days | Hot daysabove 90 °F | 43 days |
| 97 days | Freezing nightsat or below 32 °F | 120 days |
| 70% | Humidityaverage relative | 69% |
| 56 °F | Average temperatureyear round | 55 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rolla high | 41 | 46 | 56 | 67 | 76 | 84 | 89 | 88 | 80 | 69 | 56 | 45 |
| Sullivan high | 42 | 48 | 58 | 69 | 77 | 85 | 89 | 88 | 81 | 70 | 57 | 46 |
| Rolla low | 22 | 26 | 35 | 45 | 56 | 65 | 69 | 67 | 59 | 47 | 36 | 27 |
| Sullivan low | 21 | 24 | 32 | 42 | 52 | 61 | 65 | 63 | 54 | 42 | 32 | 25 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rolla | 2.7 | 2.5 | 3.6 | 4.8 | 5.0 | 3.8 | 3.5 | 2.9 | 3.3 | 3.3 | 3.5 | 2.6 |
| Sullivan | 2.7 | 2.5 | 3.7 | 4.6 | 4.9 | 3.9 | 3.4 | 3.0 | 3.3 | 3.3 | 3.5 | 2.5 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rolla | 15 | 13 | 15 | 15 | 15 | 18 | 20 | 21 | 21 | 20 | 17 | 15 |
| Sullivan | 15 | 13 | 15 | 15 | 15 | 17 | 20 | 21 | 21 | 20 | 17 | 15 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Rolla vs another city
- Rolla vs St. Robert, MO
- Rolla vs Fort Leonard Wood, MO
- Rolla vs Waynesville, MO
- Rolla vs Jefferson City, MO
- Rolla vs Lebanon, MO
- Rolla vs New York, NY
- Rolla vs Los Angeles, CA
- Rolla vs Chicago, IL
- Rolla vs Houston, TX
- Rolla vs Phoenix, AZ
- Rolla vs Philadelphia, PA
Sullivan vs another city
- Sullivan vs Union, MO
- Sullivan vs Washington, MO
- Sullivan vs Pacific, MO
- Sullivan vs De Soto, MO
- Sullivan vs Eureka, MO
- Sullivan vs Wildwood, MO
- Sullivan vs New York, NY
- Sullivan vs Los Angeles, CA
- Sullivan vs Chicago, IL
- Sullivan vs Houston, TX
- Sullivan vs Phoenix, AZ
- Sullivan 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).