🌤 Weather at Palomar Mountain State Park by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 39–69 °F | 57–84 °F | 42–79 °F | 36–51 °F |
Each range runs from the coldest monthly average low to the warmest monthly average high in that season (1991-2020 climate normals), measured at Palomar Mountain Obsy, 1 mi away, elevation 5,550 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
The park itself ranges from about 4,090 to 5,430 ft in elevation — higher ground runs cooler than the figures above.
Palomar Mountain State Park is a public state park in California near Palomar Mountain in San Diego County. Spanning 1,862 acres and established in 1933, this park offers a peaceful retreat into nature for visitors of all ages.
Quick Facts
| State | California |
| Nearest City | Palomar Mountain |
| County | San Diego |
| Park Size | 1,862 acres |
| Established | 1933 |
| Google Rating | ⭐ 4.6/5 (600 reviews) |
| Accessibility | Yes. See parks.ca.gov website for specific accessibility details. |
Location & Getting There
Palomar Mountain State Park is located near Palomar Mountain, California. The park’s coordinates are 33.3636, -116.8363.
Things to Do
California state parks span an extraordinary range of landscapes — from ancient redwood forests and rugged Pacific coastline to Mojave Desert dunes and Sierra Nevada alpine meadows. Depending on the park, visitors can enjoy hiking through old-growth groves, swimming and surfing along miles of wild beaches, camping beneath towering sequoias, kayaking coastal sea caves, mountain biking oak-studded foothills, fishing in alpine lakes, rock climbing granite formations, and wildlife watching for everything from elephant seals to California condors. Many parks also preserve important cultural and historic sites, including Native American heritage areas, Gold Rush-era settlements, and Spanish mission ruins.
Best Time to Visit
California’s parks are a year-round destination, though the ideal season depends on the region. Coastal parks enjoy mild weather from spring through fall, with summer fog keeping temperatures comfortable along the central and northern coast. Desert parks like Anza-Borrego are best visited October through April — summer temperatures can exceed 110°F. Mountain parks in the Sierra Nevada are most accessible June through October, when snow melts and trails open. Spring (March–May) brings wildflower super blooms in the southern deserts. Fall offers warm days, thinner crowds statewide, and stunning foliage at higher elevations. Winter is the quiet season at most parks and brings excellent whale watching along the coast.
Visitor Tips
Most California state parks charge a day-use parking fee of $10 per vehicle: purchasing an annual pass ($125) is highly recommended if you plan to visit multiple parks. Camping reservations can be made through ReserveCalifornia up to 6 months in advance — popular coastal campgrounds book within minutes of opening. Cell service is limited or nonexistent in many parks, so download maps and directions before you leave. Bring layers: California’s microclimates can shift dramatically even within a single park. Dogs are generally allowed in campgrounds and on paved roads but not on most trails or beaches in state parks.
Explore More California State Parks
Palomar Mountain State Park is one of many outstanding state parks in California. Discover more parks in our Best State Parks in California guide, or use our Park Finder to search by activity, location, or features.
Wildlife & Nature
Palomar Mountain SP — 1,897 acres at 5,500 feet in San Diego County — provides a forested mountain retreat with pines, firs, and cedars — a dramatic contrast to the surrounding desert. The park sits near the Palomar Observatory, home of the famous 200-inch Hale Telescope (the world’s largest from 1948-1993). Mountain lions, mule deer, and wild turkeys inhabit the forest. Band-tailed pigeons roost in the oaks.
Nearby Attractions
Palomar Observatory — 5 miles away — houses the 200-inch Hale Telescope (Caltech). Anza-Borrego Desert SP — visible from the mountain edge — stretches east to the Salton Sea. Julian — 25 miles south — has apple pie and Gold Rush history. Temecula — 30 miles west — has wineries. Lake Henshaw — below the mountain — has fishing.
More parks nearby: San Pasqual Battlefield State Historic Park is within about an hour’s drive, while Anza-Borrego Desert State Park lies within about an hour’s drive.
🐾 Dogs & Pets at Palomar Mountain State Park
- Pets allowed? statewide rule
- Dogs are permitted in California State Parks only in developed areas — campgrounds, picnic areas, parking lots and paved roads — and are prohibited on most trails, beaches and undeveloped areas unless specifically designated as dog-friendly.
- Leash rule statewide rule
- Maximum 6-foot leash at all times; dogs may not be left unattended.
- Beaches & swim areas statewide rule
- Dogs are prohibited on most state beaches; only beaches specifically designated as dog-allowed permit them (varies by park).
- Cabins & lodging statewide rule
- Pets are generally not allowed in buildings or cabins; overnight campers must keep dogs inside a tent or vehicle at night.
- Statewide exceptions statewide rule
- Designated dog-friendly trails and beaches vary park by park; misrepresenting a pet as a service animal is a misdemeanor.
Are dogs allowed at Palomar Mountain State Park?
Dogs are permitted in California State Parks only in developed areas — campgrounds, picnic areas, parking lots and paved roads — and are prohibited on most trails, beaches and undeveloped areas unless specifically designated as dog-friendly. Individual parks can post stricter rules — check signage on arrival.
Rules verified July 2026 via parks.ca.gov. More: California state parks guide · Dog rules in all 50 states compared
Park Location
Plan your gear for Palomar Mountain State Park
From our editorial guides, matched to this park’s activities:
