Chiricahua Weather by Month: Climate and Conditions to Expect
Chiricahua National Park isn't the desert furnace most people picture in Arizona. The park climbs from about 5,125 feet at the entrance to 7,310 feet at the top of Sugarloaf Mountain. That elevation changes things. Winter nights often dip below freezing, and summers stay milder than in the desert below. In a phrase, it's a semi-arid mountain climate, with a very dry spring, a stormy summer monsoon and big swings between day and night. One rule holds year-round: head up with one more layer than the visitor center parking lot makes you think you need.
Current readings are unavailable. See the seasonal averages farther down this page.
Open-Meteo readings · updating… · park time zone
Chiricahua Climate by Month
| Month | Average low (°F) | Average high (°F) | Average monthly precipitation (inches) |
|---|---|---|---|
| January | 30 | 55 | 1.46 |
| February | 32 | 59 | 1.22 |
| March | 34 | 64 | 1.18 |
| April | 39 | 72 | 0.51 |
| May | 46 | 81 | 0.31 |
| June | 55 | 90 | 0.83 |
| July | 61 | 90 | 3.98 |
| August | 59 | 86 | 4.17 |
| September | 55 | 82 | 1.77 |
| October | 46 | 75 | 1.22 |
| November | 36 | 64 | 1.06 |
| December | 30 | 55 | 1.61 |
Historical averages from the NPS weather station north of the visitor center, at about 5,400 feet; reference period not specified. Average daily minimum and maximum temperatures, average monthly precipitation. The upper part of the park is cooler and windier.
These figures describe a climate, not today's weather. Rain concentrates in July and August (about 4 inches each), which is the monsoon. June and July share the highest average high (90°F). The gap between the average low and high runs from about 25 to 35°F depending on the month, with the widest swings in May and June. Those aren't records or guaranteed swings, though. A freezing morning can turn into a T-shirt afternoon, or the reverse.
Chiricahua Weather by Season
Winter (December through February). Days stay mild, around 55 to 59°F at the visitor center, but nights average about 30°F. Snow and ice are possible, especially on the scenic drive up to Massai Point and on shaded canyon trails.
Spring (March through May). This is the driest stretch, with about 0.3 inches of rain in May. Highs climb from 64°F in March to 81°F in May, and March nights still hover near freezing. Expect wind on ridges and exposed viewpoints.
Summer (June through September). June is hot and dry. The monsoon officially runs from June 15 through September 30, which doesn't tell you when the rains start or stop in any given year. It brings thunderstorms with lightning, possible hail and short but intense downpours. September falls inside that window, so don't count on an automatic return to dry weather.
Fall (October and November). October averages 75°F by day and 46°F at night. In November, lows approach freezing again, and winter-like spells are still possible.
Is Chiricahua Cold or Hot?
Both, depending on the time of day and the elevation. The upper park is cooler and windier than the entrance, and the scenic drive takes you up there in just a few miles. On exposed trails, the high-elevation sun wears you down even when the air feels cool, and June heat remains a real risk out in the open. Cold nights, meanwhile, regularly catch campers off guard from October through April.
What to Wear in Each Season
Winter. Bring a down jacket or thick fleece, a hat and gloves, especially for sunrise and stargazing, since clear nights are also the coldest. Shoes with good traction help on frosty trails, but they don't make ice safe. Turn around when the ground is icy.
Spring and fall. Dress in three layers (a technical T-shirt, a fleece and a windbreaker). The windbreaker matters most at Massai Point and on Sugarloaf Mountain. If you're sleeping in a tent, the right sleeping bag depends on the forecast and how you handle the cold. A bag with a comfort rating around 32°F is a reasonable baseline in May and from November on.
Summer. Pack lightweight long-sleeved clothing, a wide-brimmed hat, sunscreen and a light rain jacket for the monsoon. A common rule of thumb is about 1 liter of water per hour of hiking, adjusted for the heat and your effort. There's no water at the Echo Canyon trailhead, so fill your bottles before you leave. Our hikes in Chiricahua flag the trails where sun and wind hit hardest.
Alerts and Conditions to Watch
Monsoon thunderstorms. From mid-June through late September, start early and leave yourself a margin to get back down. A storm-free morning is never guaranteed, so watch the sky as much as the clock. If you hear thunder, leave the high points (Sugarloaf Mountain, Massai Point) and get to safe shelter, meaning a solid building or a closed vehicle. Don't shelter under a lone tree.
Flash floods. A heavy downpour upstream can fill a dry canyon bed within minutes. Never cross a flooded section, on foot or by car, and don't stop at the bottom of a gully when a storm threatens. Some campsites may close for flood risk during the monsoon.
Snow and ice. Even when the approach road from Willcox is clear, the 8-mile scenic drive to Massai Point can be slick or closed because of weather. Check park road conditions before you head up. For the approach, see how to get to Chiricahua.
Cell service. Coverage is spotty in the park. Pull up the day's forecast in Willcox, before you enter the mountains.
To pick your dates to fit your trip, when to visit Chiricahua compares the seasons. The complete Chiricahua guide covers the rest of your trip prep.
Frequently Asked Questions
What conditions should I check before hiking?
Check the day's forecast, the risk of storms and the condition of roads and trails. A clear approach road doesn't guarantee there's no ice at higher elevations.
Are temperatures the same across the park?
No. The higher elevations are cooler and windier than the entrance and the visitor center. The averages in the table describe neither the day's temperature nor the conditions at each trailhead.
Is it cold at Chiricahua?
At night, yes, from November through March. Average lows hover around freezing and can dip below. Average highs over the same period run between 55 and 64°F, but the day's weather can stray from these averages.
What should I wear to visit Chiricahua?
Layer up, whatever the season. Add a warm jacket, a hat and gloves in winter, and a light rain jacket during the monsoon. In summer, bring a hat and plenty of water.
When is the monsoon at Chiricahua?
The season officially runs from June 15 through September 30, with thunderstorms, lightning and flash floods in the canyons. Rain concentrates mostly in July and August, but those dates don't tell you when it will rain on a particular day.
Does it snow at Chiricahua?
Yes, snow is possible in winter, especially in the upper part of the park. Snow and ice can make the scenic drive and shaded trails slippery, even when the main access road is clear.