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Weather & Climate in Bertram, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bertram enjoys a temperate climate with an average annual temperature of 67°F (20°C). Winters average 50°F in January while summers reach 83°F in July. The area gets 303 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 33.0 inches. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 1,269 feet.
Temperature
50°F Jan (10°C)
83°F Jul (29°C)
| Annual Average | 67.4°F |
| 25% above US avg | |
| January Average | 50°F (10°C) |
| July Average | 83°F (29°C) |
| Sunny Days | 303 days/yr |
Geography
| Elevation | 1,269 ft (387 m) |
| Area | 1.2 sq mi (3.2 km²) |
| Population Density | 1,063/sq mi |
| Coordinates | 30.7447°N, 98.0665°W |
| Timezone | America/Chicago |
| County | Burnet County County |
| Nearest Airport | Austin-Bergstrom International (AUS) 45 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 76.6 / 100 |
| Social Vulnerability | 82.7 / 100 |
| Community Resilience | 35.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.9.
| Sep 3, 2015 | 7 km NNE of Leander, Texas | M2.9 | 25 km | 5 km |
| Oct 20, 2017 | 5 km W of Flatonia, Texas | M2.9 | 147 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
5 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Beryl | Category 1 | 92 mph | 256 km |
| 2017 | Harvey | Category 3 | 121 mph | 239 km |
| 2008 | Ike | Category 2 | 98 mph | 266 km |
| 2003 | Claudette | Category 1 | 92 mph | 264 km |
| 1983 | Alicia | Category 3 | 115 mph | 273 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
414 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 36 fatalities, 287 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 27, 1997 | EF5 | 44 km | 5.1 mi | 27 |
| May 11, 1999 | EF4 | 99 km | 7.0 mi | 1 |
| May 27, 1997 | EF4 | 42 km | 5.6 mi | 1 |
| Apr 12, 2022 | EF3 | 31 km | 16.6 mi | 0 |
| Oct 12, 2001 | EF3 | 80 km | 2.5 mi | 0 |
| May 27, 1997 | EF3 | 32 km | 9.2 mi | 0 |
| May 27, 1997 | EF3 | 74 km | 1.4 mi | 0 |
| May 27, 1997 | EF3 | 95 km | 3.7 mi | 0 |
| May 13, 1994 | EF3 | 28 km | 3.5 mi | 0 |
| Mar 14, 1990 | EF3 | 65 km | 9.0 mi | 0 |
| May 17, 1989 | EF3 | 43 km | 3.0 mi | 1 |
| Apr 7, 1980 | EF3 | 43 km | 31.7 mi | 1 |
| May 26, 1976 | EF3 | 67 km | 2.0 mi | 2 |
| Mar 10, 1973 | EF3 | 16 km | 7.8 mi | 0 |
| May 6, 1969 | EF3 | 87 km | 38.9 mi | 0 |
| May 10, 1959 | EF3 | 61 km | 11.0 mi | 0 |
| Apr 24, 1957 | EF3 | 85 km | 14.7 mi | 0 |
| Apr 30, 1954 | EF3 | 69 km | 139.9 mi | 0 |
| May 22, 2024 | EF2 | 74 km | 2.8 mi | 0 |
| Mar 21, 2022 | EF2 | 79 km | 12.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: CRITTENBERG COMPLEX (21,391 acres, 2022).
| Year | Name | Acres Burned | Distance |
| 2022 | CRITTENBERG COMPLEX | 21,391 | 68 km |
| 1993 | SAN SABA FIRE | 12,896 | 93 km |
| 2015 | EATON CEMETERY | 10,441 | 92 km |
| 1999 | WILLIAMS RANCH FIRE | 6,226 | 81 km |
| 2011 | ROBINETTE | 6,039 | 63 km |
| 2011 | UNNAMED | 5,706 | 66 km |
| 2003 | UNNAMED | 4,490 | 100 km |
| 2011 | SPICEWOOD | 4,239 | 38 km |
| 1984 | STEWAIT | 3,696 | 53 km |
| 2015 | LOG CABIN | 3,391 | 93 km |
| 2022 | 3 OAKS | 3,294 | 78 km |
| 2018 | HARMAN ROAD | 3,094 | 66 km |
| 2007 | ART | 2,623 | 99 km |
| 2009 | OWL CREEK | 2,376 | 70 km |
| 2014 | HAVELAH | 2,320 | 89 km |
| 2011 | UNNAMED | 2,236 | 61 km |
| 2002 | UNNAMED | 2,234 | 38 km |
| 2006 | BROWNS CREEK RANGE | 1,889 | 69 km |
| 2008 | HAVERLAH FIRE | 1,812 | 82 km |
| 2000 | CHEROKEE FIRE | 1,597 | 53 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 50°F (10°C) | 1.7 in | Driest |
| February | 51°F (11°C) | 2.2 in | |
| March | 58°F (15°C) | 2.1 in | |
| April | 65°F (19°C) | 2.8 in | |
| May | 73°F (23°C) | 4.7 in | Wettest |
| June | 79°F (26°C) | 3.4 in | |
| July | 83°F (29°C) | 1.8 in | Warmest |
| August | 82°F (28°C) | 2.1 in | |
| September | 76°F (25°C) | 3.4 in | |
| October | 67°F (20°C) | 3.4 in | |
| November | 57°F (14°C) | 2.2 in | |
| December | 49°F (9°C) | 1.8 in | Coldest |
Bertram has a seasonal temperature swing of 34°F / from 49°F in December to 83°F in July. Total annual precipitation is 31.4 inches, with May being the wettest month (4.7") and January the driest (1.7").