Joshua Tree Weather: Forecasts, Climate & Best Time to Visit
Joshua Tree combines two deserts in a single park: the Mojave Desert to the west, cooler and higher, and the Colorado Desert to the east, hotter and lower. The result is a typically desert climate, with humidity below 25% most days, scorching summers above 104°F, and winter nights that drop below freezing. Spring and fall offer the most comfortable conditions for exploring the park on foot.
Current readings are unavailable. See the seasonal averages farther down this page.
Open-Meteo readings · updating… · park time zone
Joshua Tree Climate Month by Month
The averages below apply to the western part of the park (Mojave Desert, average elevation 3,900 feet). In the eastern section, around 2,000 feet, daytime temperatures are 5 to 9°F higher.
| Month | Low | High | Rainfall |
|---|---|---|---|
| January | 32°F | 55°F | ≈ 0.7 in |
| February | 36°F | 61°F | ≈ 0.7 in |
| March | 41°F | 70°F | ≈ 0.6 in |
| April | 48°F | 79°F | ≈ 0.2 in |
| May | 57°F | 90°F | ≈ 0.1 in |
| June | 66°F | 100°F | < 0.1 in |
| July | 73°F | 106°F | ≈ 0.4 in |
| August | 72°F | 104°F | ≈ 0.8 in |
| September | 63°F | 93°F | ≈ 0.3 in |
| October | 52°F | 81°F | ≈ 0.2 in |
| November | 39°F | 66°F | ≈ 0.3 in |
| December | 32°F | 55°F | ≈ 0.6 in |
Annual rainfall totals about 5.1 inches, spread across two periods: winter rain from December through March, and the Southwest Monsoon from July through mid-September.
Joshua Tree Weather Season by Season
Winter (December to February)
Winter days stay mild, between 55 and 61°F, with low-angle light that brings out the beauty of the granite formations. Once the sun goes down, though, the desert cools at a startling rate. Nighttime temperatures regularly fall below freezing, sometimes reaching 18°F at higher elevations. Snow occasionally falls above 3,900 feet, especially on Quail Mountain (5,817 feet, the park's highest point). Dirt roads can become impassable after snowfall or heavy rain.
Spring (March to May)
Spring is the prime season at Joshua Tree. In March and April, highs range from 70 to 79°F, while mornings stay cool at 41 to 48°F. This is wildflower season. After a wet enough winter, the desert fills with lupines, California poppies, and blooming cacti. Visitor numbers peak in April. By mid-May, the heat really starts to build, regularly climbing above 86°F.
Summer (June to August)
Summer is no season for the unprepared. Daytime temperatures hover around 100 to 106°F, and nighttime temperatures barely cool to 72 to 75°F. July and August bring the monsoon. Severe thunderstorms can break out in the late afternoon, sometimes accompanied by flash floods in the canyons. If you visit in summer, schedule any strenuous activities for the very early morning, before 9 a.m.
Fall (September to November)
Fall offers springlike temperatures. Highs drop to around 81°F in October, nights become mild again at 50 to 52°F, and crowds remain manageable through November. It's our second-best time to visit, with the added benefit of especially beautiful fall light on the rocks. In November, nighttime cold gradually returns.
Is Joshua Tree Hot or Cold? Records and Extremes
Joshua Tree runs the full range of temperatures. Summer heat easily reaches 104 to 108°F in the park's lower areas, with peaks above 113°F during intense heat waves. At the other extreme, the summits record winter nights as cold as 14 to 9°F.
The biggest surprise is the daily temperature swing. In April, it can be 79°F at 3 p.m. and 41°F at 3 a.m. The difference between the day's high and the night's low often exceeds 36°F, something many visitors underestimate, even in spring.
What to Wear When Visiting Joshua Tree
The basic rule applies in every season: wear light layers and bring a jacket, even in the middle of summer.
Spring and fall: a breathable shirt for the daytime, a fleece or light jacket for morning and evening, and hiking shoes with good traction (the rocky terrain is uneven). A hat and SPF 50 sunscreen are essential starting in March.
Summer: light-colored clothing, a wide-brimmed hat, and wraparound sunglasses. Bring at least 3 to 4 liters of water per person for a half day of hiking. Don't hit a trail without enough water. Heat-related illness is a real risk in July and August, and water sources are absent from nearly the entire park.
Winter: a down jacket or waterproof jacket for evenings and nights. If you camp, a sleeping bag rated to 23°F is the minimum recommended from December through February.
Warnings and Conditions to Watch
Flash floods: in July and August, monsoon thunderstorms can send flash floods through canyons within minutes, even when the sky above you is clear. Stay out of canyon bottoms and washes whenever a storm approaches, and check National Weather Service alerts before every outing.
Road closures: some dirt roads (Geology Tour Road, Pinkham Canyon Road) become impassable after heavy rain or snow. The NPS updates its “Current Conditions” in real time on its official website.
Wind: spring is the windiest season. Gusts of 37 to 50 mph are possible in March and April, kicking up sand that reduces visibility and makes driving on dirt roads more difficult.
Extreme heat: the NPS specifically advises against hiking after 10 a.m. from June through September. No trail in Joshua Tree offers significant shade. Prolonged exposure to 104°F without water or shelter can quickly become a medical emergency.
Frequently Asked Questions
When should you avoid visiting Joshua Tree?
Avoid June through mid-September if you plan to hike. Daytime temperatures exceed 104°F, monsoon thunderstorms make some canyons dangerous in the afternoon, and nighttime heat makes it difficult to recover properly.
What is the coldest month in Joshua Tree?
December and January are the coldest months in Joshua Tree. Highs top out around 55°F, and nighttime temperatures regularly fall below freezing, sometimes with snow at higher elevations in the park.
Is this a good time to visit Joshua Tree?
It depends on the month you're asking about. Conditions are comfortable from October through April. In summer (June to August), the heat is a real constraint. Plan to start at dawn and avoid physical activity during the day, or postpone your visit until fall.
What is the best time to visit California?
California is huge, so the answer depends on your itinerary. For Joshua Tree specifically, March and April are our top recommendation. The central coast and the Sierra Nevada have different considerations.
What's the weather like in Joshua Tree right now?
Keep the seasonal patterns in mind: above 104°F in the middle of summer, 68 to 81°F in spring and fall, and 55 to 61°F during winter days, with very cold nights. For today's conditions, check the weather forecast built into this page.
What should you wear when visiting Joshua Tree?
Wear layers you can add or remove in every season. The day-to-night temperature swing can exceed 36°F. Hiking shoes, a hat, and sunscreen are essential even outside summer. In July and August, add 3 to 4 liters of water per person for every half-day outing.