Grimes, CA
Full City Profile · California · Sutter County County
2.1
/5.0
C
Fair
371
Population
164/sq mi density
$47,566
Median Income
$24,310 per capita
62°F
Avg Temperature
C
Overall
2.1 / 5.0
Fair overall score based on economy, affordability, safety and education
C
Economy
2.4 / 5.0
$47,566 median income, 4.4% unemployment
D
Education
1.7 / 5.0
9.3% bachelor's degree or higher
Grimes enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 46°F in January while summers reach 76°F in July. Annual precipitation totals 17.2 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 49.
Temperature
46°F Jan (8°C)
76°F Jul (25°C)
| Annual Average | 61.5°F |
| 14% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 76°F (25°C) |
Geography
| Elevation | 44 ft (13 m) |
| Area | 2.3 sq mi (5.9 km²) |
| Population Density | 164/sq mi |
| Coordinates | 39.0742°N, 121.8988°W |
| Timezone | America/Los_Angeles |
| County | Sutter County County |
| Nearest Airport | Sacramento International (SMF) 31 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 49.0 |
| Rating | Good |
| Good Days % | 53.3% |
| Unhealthy Days | 5 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0464 ppm |
| NO₂ (Nitrogen Dioxide) | 9.6 ppb |
| PM2.5 (Fine Particles) | 8.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 83.7 / 100 |
| Social Vulnerability | 57.3 / 100 |
| Community Resilience | 41.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Drought | Very High |
| Cold Wave | No Rating |
| Landslide | Very Low |
| Volcano | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Clear Lake (76 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 76 km |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 161 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 3.6 in | Wettest |
| February | 51°F (10°C) | 3.0 in | |
| March | 55°F (13°C) | 2.2 in | |
| April | 60°F (15°C) | 1.0 in | |
| May | 67°F (20°C) | 0.8 in | |
| June | 73°F (23°C) | 0.5 in | |
| July | 76°F (25°C) | 0.0 in | Warmest, Driest |
| August | 75°F (24°C) | 0.0 in | |
| September | 72°F (22°C) | 0.1 in | |
| October | 64°F (18°C) | 0.9 in | |
| November | 53°F (12°C) | 1.9 in | |
| December | 46°F (8°C) | 3.2 in | Coldest |
Grimes has a seasonal temperature swing of 30°F / from 46°F in December to 76°F in July. Total annual precipitation is 17.2 inches, with January being the wettest month (3.6") and July the driest (0.0").