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Weather & Climate in Rolla, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Rolla experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 30°F in January while summers reach 78°F in July. The area gets 258 sunny days per year, above the national average. Annual precipitation totals 42.8 inches. The area receives 7.4 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 1,125 feet.
Temperature
30°F Jan (-1°C)
78°F Jul (25°C)
| Annual Average | 55.1°F |
| 2% above US avg | |
| January Average | 30°F (-1°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 258 days/yr |
Geography
| Elevation | 1,125 ft (343 m) |
| Area | 11.9 sq mi (30.7 km²) |
| Population Density | 1,662/sq mi |
| Coordinates | 37.9514°N, 91.7713°W |
| Timezone | America/Chicago |
| Nearest Airport | Waynesville-St Robert Regional Forney Field (TBN) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
33 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Jun 7, 2011 | 18 km NNW of Potosi, Missouri | M3.9 | 77 km | 21 km |
| Jul 7, 1991 | 11 km ENE of Brandsville, Missouri | M3.9 | 142 km | 8 km |
| Aug 16, 2003 | 5 km W of Thomasville, Missouri | M3.7 | 130 km | 0 km |
| Jul 31, 2005 | Missouri | M3.3 | 119 km | 5 km |
| Aug 27, 1993 | 5 km SSE of Olympian Village, Missouri | M3.3 | 118 km | 22 km |
| Jan 21, 1992 | 5 km SE of Linn Creek, Missouri | M3.1 | 79 km | 5 km |
| Mar 30, 2001 | 1 km SW of Hermitage, Missouri | M3.1 | 136 km | 5 km |
| Mar 18, 1990 | 9 km W of Alton, Missouri | M3.0 | 142 km | 1 km |
| May 18, 2006 | 9 km SSE of De Soto, Missouri | M2.9 | 110 km | 6 km |
| Jul 8, 2003 | 1 km N of Leasburg, Missouri | M2.9 | 45 km | 4 km |
| Apr 29, 2022 | 1 km SSW of Peerless Park, Missouri | M2.8 | 128 km | 8 km |
| Jul 31, 1995 | 8 km SSW of Caledonia, Missouri | M2.8 | 89 km | 5 km |
| May 5, 2008 | 3 km SSE of Fenton, Missouri | M2.8 | 133 km | 19 km |
| May 14, 2007 | 12 km NE of Alton, Missouri | M2.7 | 136 km | 8 km |
| Jul 22, 1998 | 12 km NE of Mine La Motte, Missouri | M2.7 | 143 km | 11 km |
| Oct 26, 1998 | 10 km NE of Van Buren, Missouri | M2.7 | 123 km | 4 km |
| Nov 5, 1996 | 11 km SW of Marquand, Missouri | M2.7 | 147 km | 2 km |
| Nov 12, 1996 | 15 km SSE of Olympian Village, Missouri | M2.7 | 120 km | 5 km |
| Jul 15, 1990 | 7 km SW of Potosi, Missouri | M2.7 | 82 km | 3 km |
| Sep 5, 2015 | 5 km SE of High Ridge, Missouri | M2.7 | 124 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
311 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 33 fatalities, 332 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 22, 1969 | EF4 | 59 km | 20.2 mi | 2 |
| Dec 21, 1967 | EF4 | 64 km | 27.9 mi | 3 |
| Feb 24, 1956 | EF4 | 93 km | 77.6 mi | 6 |
| Mar 25, 1954 | EF4 | 81 km | 12.1 mi | 2 |
| May 22, 2019 | EF3 | 85 km | 32.7 mi | 0 |
| Dec 31, 2010 | EF3 | 3 km | 11.0 mi | 2 |
| Dec 31, 2010 | EF3 | 47 km | 7.5 mi | 0 |
| Jan 7, 2008 | EF3 | 23 km | 4.7 mi | 0 |
| Jan 7, 2008 | EF3 | 26 km | 1.8 mi | 0 |
| May 4, 2003 | EF3 | 93 km | 14.0 mi | 4 |
| Jun 1, 1999 | EF3 | 10 km | 7.0 mi | 0 |
| May 1, 1983 | EF3 | 57 km | 9.0 mi | 0 |
| Dec 8, 1966 | EF3 | 88 km | 1.3 mi | 0 |
| May 21, 1957 | EF3 | 77 km | 22.2 mi | 8 |
| May 21, 1957 | EF3 | 51 km | 10.2 mi | 0 |
| Apr 15, 2023 | EF2 | 20 km | 6.9 mi | 0 |
| May 11, 2016 | EF2 | 53 km | 4.4 mi | 0 |
| Jun 19, 2011 | EF2 | 38 km | 2.8 mi | 0 |
| Dec 31, 2010 | EF2 | 88 km | 12.2 mi | 0 |
| May 8, 2009 | EF2 | 77 km | 2.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (5,344 acres, 1994).
| Year | Name | Acres Burned | Distance |
| 1994 | UNNAMED | 5,344 | 92 km |
| 2011 | MINNINGHAW | 4,792 | 66 km |
| 2010 | UNNAMED | 4,767 | 100 km |
| 2017 | UNNAMED | 4,602 | 66 km |
| 2023 | ELM SPRINGS RX | 4,378 | 23 km |
| 2009 | MOUNTAIN CREEK | 4,322 | 92 km |
| 1991 | UNNAMED | 4,179 | 99 km |
| 2022 | SMITH MILL HOLLOW | 3,978 | 67 km |
| 2023 | CANNON RANGE RX | 3,870 | 55 km |
| 2021 | UNNAMED | 3,665 | 61 km |
| 1991 | UNNAMED | 3,533 | 95 km |
| 1994 | UNNAMED | 3,336 | 89 km |
| 2021 | KAINTUCK | 3,325 | 18 km |
| 2005 | UNNAMED | 3,252 | 68 km |
| 1991 | UNNAMED | 3,135 | 99 km |
| 2021 | COUNCIL BLUFF | 3,035 | 78 km |
| 2022 | LITTLE CREEK | 3,004 | 68 km |
| 2021 | HODGE HOLLOW | 2,922 | 63 km |
| 2012 | KINFOLK RD | 2,883 | 92 km |
| 2024 | COUNCIL BLUFF WEST RX | 2,846 | 78 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.0 in | Coldest, Driest |
| February | 35°F (2°C) | 2.2 in | |
| March | 45°F (7°C) | 3.7 in | |
| April | 55°F (13°C) | 4.0 in | |
| May | 64°F (18°C) | 4.8 in | Wettest |
| June | 72°F (22°C) | 4.1 in | |
| July | 78°F (25°C) | 3.9 in | Warmest |
| August | 76°F (24°C) | 3.7 in | |
| September | 68°F (20°C) | 3.8 in | |
| October | 57°F (14°C) | 3.5 in | |
| November | 45°F (7°C) | 3.9 in | |
| December | 35°F (1°C) | 3.2 in |
Rolla has a seasonal temperature swing of 47°F / from 30°F in January to 78°F in July. Total annual precipitation is 42.8 inches, with May being the wettest month (4.8") and January the driest (2.0").