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Be prepared for sudden weather changes and temperature extremes. High winds are common.
Spring
High winds are common during the months of February, March and often well into April, with wind gusts in excess of 100 mph. Strong wind advisories are often forecast by the National Weather Service for Guadalupe Pass. Hiking can be challenging on exposed trails. If temperatures are anything less than warm , the wind chill factor will force you to bundle up. During the spring months the average precipitation is less than an inch. Temperatures can be mild; the average high is 71�F, the low 46�F, with and all-time high of a simmering 92�F and an all-time low of -4�F.
Summer
Though May, June, and July are generally the hottest and the driest months, locally severe afternoon thunderstorms may bring a sudden drop in the temperature, and send you fleeing for shelter and a quick change from shorts and t-shirts to jackets and pants. Flash flooding can occur and caution should be used in arroyos and dry washes. It's best to stay clear of open ridge tops during the lightning that frequently accompanies these storms. The average precipitation is 2.75 inches; temperatures range from high 80's to low 60's (averages). The all-time high and low respectively are 101�F and 40�F.
Fall
Fall is everyones favorite time to visit Guadalupe Mountains National Park, and for good reason! The weather is generally beautiful - mild, calm, and refreshed from the summer rains. Cool crisp days, and cold nights occur toward the latter days of October, and trigger the beautiful color change of the maples, sumacs, and oaks. The average rainfall is 2.43 inches. The average high is 70�F, the low 56�F, with an all-time high of 93�F and an all-time low of 1�F.
Winter
During the winter months (November - January) expect snowfall with cold temperatures and some mild days. Snow generally does not last more than a few days in the low country, but in the high country may linger much longer, especially on north face aspects, and may cause trails to be icy and muddy. Snow depths may be dramatically deeper at higher elevations. Average precipitation is .92 inches. Average high temperature is 56�F; low temperature is 33�F, with an all-time high of 78�F, and an all-time low of -6�F. The wind often blows quite strong with the passing of fronts.
Lightning
Spectacular scenery awaits you at Guadalupe Mountains National Park. But the hiking trails that take you to the beautiful vistas may also make you vulnerable to lightning. To better protect yourself from being struck, take the time to ask about locally predicted weather, carry adequate rain gear, and learn what to do if you are caught in a dangerous situation. Simple knowledge of lightning safety may save your life.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| High - �F | 53.0 | 58.0 | 63.0 | 71.0 | 78.0 | 88.0 | 87.0 | 84.0 | 78.0 | 71.0 | 61.0 | 57.0 | 70.8 |
| Low - �F | 30.0 | 35.0 | 38.0 | 46.0 | 55.0 | 63.0 | 63.0 | 62.0 | 57.0 | 49.0 | 38.0 | 33.0 | 47.4 |
| Precip (in) | 1.04 | 1.04 | 0.87 | 0.57 | 1.26 | 1.48 | 3.08 | 3.77 | 5.22 | 1.41 | 0.65 | 0.67 | 21.06 |
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