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Thermalito, CA
Full City Profile · California · Butte County County
2.6
/5.0
C+
Fair
6,645
Population
524/sq mi density
$53,814
Median Income
$30,480 per capita
$257,400
Home Value
$302,221 Zillow
$1,104
Median Rent
28.4% income on rent
64°F
Avg Temperature
302 sunny days/yr
566
Violent Crime/100K
6,178 property/100K
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$53,814 median income, 3.5% unemployment
B+
Affordability
4.0 / 5.0
$257,400 home value, $1,104/mo rent
F
Safety
1.0 / 5.0
566 violent crimes/100K (49% above avg)
D
Education
1.8 / 5.0
10.4% bachelor's degree or higher
Thermalito enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 49°F in January while summers reach 80°F in July. The area gets 302 sunny days per year. Annual precipitation totals 30.6 inches. Air quality is rated Good with a median AQI of 48.
Temperature
49°F Jan (9°C)
80°F Jul (27°C)
| Annual Average | 63.5°F |
| 18% above US avg | |
| January Average | 49°F (9°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 185 ft (56 m) |
| Area | 12.9 sq mi (33.3 km²) |
| Population Density | 524/sq mi |
| Coordinates | 39.5089°N, 121.6011°W |
| Timezone | America/Los_Angeles |
| County | Butte County County |
| Nearest Airport | Chico Regional (CIC) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0444 ppm |
| NO₂ (Nitrogen Dioxide) | 8.4 ppb |
| CO (Carbon Monoxide) | 0.24 ppm |
| PM2.5 (Fine Particles) | 7.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.9 / 100 |
| Social Vulnerability | 59.0 / 100 |
| Community Resilience | 60.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively High |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Drought | Very High |
| Cold Wave | No Rating |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Lassen Volcanic Center (110 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 110 km |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 117 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (9°C) | 6.2 in | Wettest |
| February | 50°F (10°C) | 5.0 in | |
| March | 54°F (12°C) | 5.0 in | |
| April | 59°F (15°C) | 2.1 in | |
| May | 67°F (19°C) | 0.9 in | |
| June | 74°F (24°C) | 0.4 in | |
| July | 80°F (27°C) | 0.0 in | Warmest, Driest |
| August | 78°F (26°C) | 0.2 in | |
| September | 74°F (23°C) | 0.6 in | |
| October | 65°F (18°C) | 1.9 in | |
| November | 53°F (11°C) | 4.7 in | |
| December | 46°F (8°C) | 4.7 in | Coldest |
Thermalito has a seasonal temperature swing of 34°F / from 46°F in December to 80°F in July. Total annual precipitation is 31.8 inches, with January being the wettest month (6.2") and July the driest (0.0").