All Countries
Nicolaus, CA
Full City Profile · California · Yolo County County
3.3
/5.0
B
Good
93
Population
30/sq mi density
$108,750
Median Income
$55,817 per capita
$609,400
Home Value
$524,597 Zillow
61°F
Avg Temperature
330 sunny days/yr
114
Violent Crime/100K
1,420 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$108,750 median income, 0.0% unemployment
B+
Affordability
3.5 / 5.0
$609,400 home value, /mo rent
F
Safety
1.0 / 5.0
114 violent crimes/100K
A
Education
4.1 / 5.0
38.5% bachelor's degree or higher
Nicolaus enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 47°F in January while summers reach 76°F in July. The area gets 330 sunny days per year. Annual precipitation totals 18.0 inches. Air quality is rated Good with a median AQI of 48.
Temperature
47°F Jan (8°C)
76°F Jul (25°C)
| Annual Average | 61.2°F |
| 13% above US avg | |
| January Average | 47°F (8°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 32 ft (10 m) |
| Area | 3.1 sq mi (8.1 km²) |
| Population Density | 30/sq mi |
| Coordinates | 38.8982°N, 121.5728°W |
| Timezone | America/Los_Angeles |
| County | Yolo County County |
| Nearest Airport | Sacramento International (SMF) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0410 ppm |
| NO₂ (Nitrogen Dioxide) | 5.7 ppb |
| PM2.5 (Fine Particles) | 7.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.4 / 100 |
| Social Vulnerability | 24.2 / 100 |
| Community Resilience | 69.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Drought | Very High |
| Cold Wave | No Rating |
| Landslide | Relatively Low |
| Volcano | Very Low |
| Avalanche | 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 | 141 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Clear Lake (104 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 104 km |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 177 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (8°C) | 3.7 in | Wettest |
| February | 51°F (11°C) | 3.0 in | |
| March | 55°F (13°C) | 2.8 in | |
| April | 60°F (16°C) | 1.3 in | |
| May | 68°F (20°C) | 0.4 in | |
| June | 74°F (23°C) | 0.2 in | |
| July | 76°F (25°C) | 0.1 in | Warmest, Driest |
| August | 75°F (24°C) | 0.1 in | |
| September | 72°F (22°C) | 0.4 in | |
| October | 64°F (18°C) | 1.3 in | |
| November | 53°F (12°C) | 3.1 in | |
| December | 46°F (8°C) | 2.9 in | Coldest |
Nicolaus has a seasonal temperature swing of 30°F / from 46°F in December to 76°F in July. Total annual precipitation is 19.3 inches, with January being the wettest month (3.7") and July the driest (0.1").