McArthur, CA
Full City Profile · California · Shasta County County
1.6
/5.0
D
Poor
390
Population
390/sq mi density
$288,000
Home Value
$303,481 Zillow
51°F
Avg Temperature
D
Overall
1.6 / 5.0
Below average overall score based on economy, affordability, safety and education
D
Education
1.6 / 5.0
7.9% bachelor's degree or higher
McArthur experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 35°F in January while summers reach 69°F in July. Annual precipitation totals 19.0 inches. The area receives 3.0 inches of snow annually. Air quality is rated Good with a median AQI of 44.
Temperature
35°F Jan (2°C)
69°F Jul (21°C)
| Annual Average | 50.5°F |
| 6% below US avg | |
| January Average | 35°F (2°C) |
| July Average | 69°F (21°C) |
Geography
| Elevation | 3,314 ft (1,010 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 390/sq mi |
| Coordinates | 41.0420°N, 121.4052°W |
| Timezone | America/Los_Angeles |
| County | Shasta County County |
| Nearest Airport | Redding Regional (RDD) 60 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 73.2% |
| Unhealthy Days | 4 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0439 ppm |
| PM2.5 (Fine Particles) | 7.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.4 / 100 |
| Social Vulnerability | 41.1 / 100 |
| Community Resilience | 47.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively High |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Lassen Volcanic Center (62 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 62 km |
| Medicine Lake | Shield | 2,412 m (7,913 ft) | 1060 | 65 km |
| Shasta | Stratovolcano | 4,317 m (14,163 ft) | 1250 | 78 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (2°C) | 2.7 in | |
| February | 38°F (3°C) | 2.6 in | |
| March | 43°F (6°C) | 2.6 in | |
| April | 48°F (9°C) | 1.6 in | |
| May | 56°F (13°C) | 1.5 in | |
| June | 63°F (17°C) | 0.8 in | |
| July | 69°F (21°C) | 0.2 in | Warmest |
| August | 67°F (20°C) | 0.1 in | Driest |
| September | 61°F (16°C) | 0.4 in | |
| October | 51°F (11°C) | 1.2 in | |
| November | 41°F (5°C) | 2.3 in | |
| December | 34°F (1°C) | 3.1 in | Coldest, Wettest |
McArthur has a seasonal temperature swing of 35°F / from 34°F in December to 69°F in July. Total annual precipitation is 19.0 inches, with December being the wettest month (3.1") and August the driest (0.1").