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Weather & Climate in St. John, MO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
St. John enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 49°F in January while summers reach 84°F in July. The area gets 276 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 32.9 inches. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 689 feet.
Temperature
49°F Jan (10°C)
84°F Jul (29°C)
| Annual Average | 67.8°F |
| 26% above US avg | |
| January Average | 49°F (10°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 689 ft (210 m) |
| Area | 0.6 sq mi (1.4 km²) |
| Population Density | 4,621/sq mi |
| Coordinates | 30.3304°N, 97.6999°W |
| Timezone | America/Chicago |
| Nearest Airport | Austin-Bergstrom International (AUS) 10 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
90 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Jan 30, 2025 | 18 km ENE of Falls City, Texas | M4.6 | 142 km | 7 km |
| Sep 14, 2023 | 16 km ENE of Falls City, Texas | M4.1 | 143 km | 8 km |
| Jan 31, 2025 | 19 km ENE of Falls City, Texas | M3.5 | 141 km | 7 km |
| Apr 10, 2021 | 10 km SSE of Smiley, Texas | M3.4 | 128 km | 5 km |
| Apr 17, 2024 | 21 km ENE of Falls City, Texas | M3.2 | 141 km | 7 km |
| Feb 7, 2021 | 8 km ESE of Smiley, Texas | M3.2 | 122 km | 6 km |
| Jan 3, 2025 | 20 km ENE of Falls City, Texas | M3.1 | 142 km | 7 km |
| Apr 18, 2020 | 21 km ENE of Falls City, Texas | M3.1 | 140 km | 5 km |
| Feb 12, 2018 | 10 km ENE of Falls City, Texas | M3.1 | 149 km | 5 km |
| May 12, 2019 | 18 km N of Yorktown, Texas | M3.1 | 134 km | 5 km |
| Sep 11, 2023 | 17 km ENE of Falls City, Texas | M3.1 | 143 km | 8 km |
| Feb 19, 2015 | 3 km N of Hallettsville, Texas | M3.1 | 120 km | 5 km |
| May 14, 2019 | 1 km SSE of Smiley, Texas | M3.1 | 120 km | 5 km |
| Jul 2, 2017 | 13 km NE of Falls City, Texas | M3.0 | 143 km | 5 km |
| Sep 11, 2023 | 17 km ENE of Falls City, Texas | M3.0 | 143 km | 8 km |
| Jan 1, 2024 | 18 km S of Gonzales, Texas | M3.0 | 114 km | 3 km |
| Feb 3, 2019 | 13 km ESE of Smiley, Texas | M3.0 | 125 km | 5 km |
| May 10, 2019 | 13 km SSE of Stockdale, Texas | M3.0 | 135 km | 5 km |
| Mar 23, 2019 | 11 km ENE of Falls City, Texas | M2.9 | 145 km | 5 km |
| Jul 21, 2021 | 11 km S of Smiley, Texas | M2.9 | 130 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
7 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Beryl | Category 1 | 92 mph | 200 km |
| 2021 | Nicholas | Category 1 | 75 mph | 258 km |
| 2017 | Harvey | Category 4 | 132 mph | 185 km |
| 2008 | Ike | Category 2 | 109 mph | 240 km |
| 2003 | Claudette | Category 1 | 92 mph | 207 km |
| 1989 | Jerry | Category 1 | 86 mph | 289 km |
| 1983 | Alicia | Category 3 | 115 mph | 223 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
459 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 35 fatalities, 319 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 27, 1997 | EF5 | 55 km | 5.1 mi | 27 |
| May 27, 1997 | EF4 | 31 km | 5.6 mi | 1 |
| Apr 12, 2022 | EF3 | 62 km | 16.6 mi | 0 |
| Oct 12, 2001 | EF3 | 94 km | 2.5 mi | 0 |
| Mar 10, 2000 | EF3 | 98 km | 21.0 mi | 0 |
| May 27, 1997 | EF3 | 96 km | 1.4 mi | 0 |
| May 27, 1997 | EF3 | 27 km | 9.2 mi | 0 |
| May 13, 1994 | EF3 | 61 km | 3.5 mi | 0 |
| Mar 14, 1990 | EF3 | 84 km | 9.0 mi | 0 |
| May 17, 1989 | EF3 | 50 km | 3.0 mi | 1 |
| Apr 7, 1980 | EF3 | 21 km | 31.7 mi | 1 |
| May 26, 1976 | EF3 | 90 km | 2.0 mi | 2 |
| Mar 10, 1973 | EF3 | 68 km | 7.8 mi | 0 |
| May 6, 1969 | EF3 | 88 km | 38.9 mi | 0 |
| Sep 20, 1967 | EF3 | 86 km | 5.0 mi | 0 |
| May 10, 1959 | EF3 | 6 km | 11.0 mi | 0 |
| Apr 24, 1957 | EF3 | 32 km | 14.7 mi | 0 |
| Mar 20, 1957 | EF3 | 75 km | 16.9 mi | 0 |
| Mar 20, 1957 | EF3 | 84 km | 7.2 mi | 0 |
| Apr 30, 1954 | EF3 | 26 km | 139.9 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
19 wildfires (100+ acres) recorded within 100 km. Largest: BASTROP COUNTY COMPLEX (31,838 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | BASTROP COUNTY COMPLEX | 31,838 | 50 km |
| 2011 | DELHI | 4,735 | 64 km |
| 2011 | SPICEWOOD | 4,239 | 40 km |
| 2015 | HIDDEN PINES | 3,807 | 57 km |
| 1984 | STEWAIT | 3,696 | 68 km |
| 2011 | UNNAMED | 2,236 | 96 km |
| 2002 | UNNAMED | 2,234 | 54 km |
| 2011 | LUTHERHILL | 2,215 | 91 km |
| 2011 | UNNAMED | 1,581 | 97 km |
| 2008 | BERTRAM | 1,567 | 57 km |
| 2008 | HWY 195 FIRE | 1,523 | 52 km |
| 2022 | BUDDY | 1,521 | 80 km |
| 2008 | CR 208 | 1,483 | 77 km |
| 2009 | WILDERNESS RIDGE | 1,278 | 55 km |
| 2007 | WILLOW CITY | 1,235 | 98 km |
| 2022 | SMOKE RIDER | 1,233 | 55 km |
| 2008 | SANDY 2-148 | 1,144 | 73 km |
| 2018 | 308 | 1,102 | 92 km |
| 2006 | PURGATORY | 1,004 | 62 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (10°C) | 1.9 in | Coldest, Driest |
| February | 54°F (12°C) | 2.2 in | |
| March | 61°F (16°C) | 1.9 in | |
| April | 68°F (20°C) | 2.7 in | |
| May | 75°F (24°C) | 4.8 in | Wettest |
| June | 81°F (27°C) | 3.8 in | |
| July | 84°F (29°C) | 2.0 in | |
| August | 84°F (29°C) | 2.1 in | Warmest |
| September | 79°F (26°C) | 3.5 in | |
| October | 70°F (21°C) | 3.5 in | |
| November | 59°F (15°C) | 2.6 in | |
| December | 52°F (11°C) | 2.0 in |
St. John has a seasonal temperature swing of 35°F / from 49°F in January to 84°F in August. Total annual precipitation is 32.9 inches, with May being the wettest month (4.8") and January the driest (1.9").