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Granite Bay, CA
Full City Profile · California · Sacramento County County
3.6
/5.0
B+
Good
21,378
Population
992/sq mi density
$190,000
Median Income
$85,943 per capita
$1,094,100
Home Value
$1,127,951 Zillow
$2,609
Median Rent
31.6% income on rent
61°F
Avg Temperature
302 sunny days/yr
83
Violent Crime/100K
1,721 property/100K
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$190,000 median income, 2.7% unemployment
B
Affordability
3.4 / 5.0
$1,094,100 home value, $2,609/mo rent
F
Safety
1.0 / 5.0
83 violent crimes/100K
A+
Education
5.0 / 5.0
62.0% bachelor's degree or higher
Granite Bay enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 47°F in January while summers reach 78°F in July. The area gets 302 sunny days per year. Annual precipitation totals 36.1 inches. Air quality is rated Good with a median AQI of 48.
Temperature
47°F Jan (8°C)
78°F Jul (26°C)
| Annual Average | 61.2°F |
| 13% above US avg | |
| January Average | 47°F (8°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 400 ft (122 m) |
| Area | 21.6 sq mi (55.9 km²) |
| Population Density | 992/sq mi |
| Coordinates | 38.7604°N, 121.1682°W |
| Timezone | America/Los_Angeles |
| County | Sacramento County County |
| Nearest Airport | Sacramento International (SMF) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0409 ppm |
| NO₂ (Nitrogen Dioxide) | 8.1 ppb |
| SO₂ (Sulfur Dioxide) | 0.17 ppb |
| CO (Carbon Monoxide) | 0.47 ppm |
| PM2.5 (Fine Particles) | 7.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.1 / 100 |
| Social Vulnerability | 37.4 / 100 |
| Community Resilience | 57.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Earthquake | Relatively High |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | No Rating |
| Landslide | Relatively Low |
| Coastal Flood | No Rating |
| Volcano | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 4.5 m (15 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1868 | N. CALIFORNIA | Eruption + Earthquake | 4.5 m | 30 | 143 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Clear Lake (141 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 141 km |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 195 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (8°C) | 4.1 in | Wettest |
| February | 52°F (11°C) | 3.3 in | |
| March | 55°F (13°C) | 3.2 in | |
| April | 60°F (15°C) | 1.7 in | |
| May | 67°F (19°C) | 0.4 in | |
| June | 74°F (23°C) | 0.2 in | |
| July | 78°F (26°C) | 0.1 in | Warmest, Driest |
| August | 77°F (25°C) | 0.1 in | |
| September | 73°F (23°C) | 0.4 in | |
| October | 65°F (18°C) | 1.5 in | |
| November | 53°F (12°C) | 3.7 in | |
| December | 46°F (8°C) | 3.2 in | Coldest |
Granite Bay has a seasonal temperature swing of 32°F / from 46°F in December to 78°F in July. Total annual precipitation is 21.7 inches, with January being the wettest month (4.1") and July the driest (0.1").