California State Parks · California
George J. Hatfield State Recreation Area
California State Parks · California, United States
- Group sites
- Yes
- Drinking water
- Yes
- Restrooms
- Yes
- Showers
- No
- Dump station
- No
- Pets
- Yes
- Elevation
- 69 ft
- Dark sky
- Bortle class 4
- Cell coverage
- T-Mobile weak · Verizon weak · AT&T good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Nearest town
- Hilmar-Irwin
- Address
- 4394 Kelley Road
- Phone
- (209) 596-9032
About
George J. Hatfield State Recreation Area is a California State Park campground offering tent camping, group campsites, remote/backcountry camping, RV camping in Merced County. Coordinates use DPR's park entry-point location, since no specific campground point is published for this unit; the pin may be near the park entrance rather than the exact campground.
Fees
California State Parks (ReserveCalifornia.com) does not publish one statewide nightly rate schedule; its own Booking and Fees page states rates 'vary based on the accommodation type and the amenities available at that park' and are posted per-park at booking time. A non-refundable $8.25 reservation fee (also $8.25 to modify or cancel) applies per ReserveCalifornia transaction, on top of the site's nightly rate. Fees include entry for one vehicle and one legally towed vehicle/trailer; additional vehicles are charged per-night at the park. Yes: Dogs allowed only in campground.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 60° | 43° | 33° | 73° | 0 of 11 |
| February | 62° | 44° | 33° | 77° | 0 of 11 |
| March | 66° | 46° | 34° | 91° | 0 of 11 |
| April | 72° | 50° | 40° | 89° | 0 of 11 |
| May | 86° | 57° | 46° | 98° | 0 of 11 |
| June | 94° | 62° | 52° | 109° | 0 of 11 |
| July | 102° | 67° | 57° | 113° | 0 of 11 |
| August | 98° | 67° | 58° | 111° | 0 of 11 |
| September | 92° | 62° | 53° | 106° | 0 of 11 |
| October | 82° | 56° | 47° | 94° | 0 of 10 |
| November | 67° | 48° | 38° | 83° | 0 of 10 |
| December | 59° | 41° | 32° | 67° | 0 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Nearby campgrounds
- McConnell State Recreation Area · California State Parks · 14 mi
- San Luis Reservoir State Recreation Area · California State Parks · 23 mi
- Frank Raines Regional Park OHV Campground · City, County & Regional Parks · 24 mi
- Caswell Memorial State Park · California State Parks · 27 mi
- Modesto Reservoir Regional Park · City, County & Regional Parks · 28 mi
All public campgrounds in California · Every state and province · Facts read from the operator 2026-08-25. Confirm fees, rules and current status with the operator before you go.