• Sonoran Desert at Organ Pipe NM

    Organ Pipe Cactus

    National Monument Arizona

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    Currently the park’s phone system is not functioning. Please email sue_walter@nps.gov with questions and request for information.

Weather

A Rain Shower Over Grass Canyon
A Rain Shower & Rainbow Over Grass Canyon
 

Current Weather and 7-day Forecast Information (National Weather Service)

Through the Year

Organ Pipe Cactus National Monument is where summer spends the winter... warm days (60s F) and chilly nights (40s F) are common during the late fall to early spring, with occasional rains. Most of our visitation happens between December and March. Consistent winter rains will produce gorgeous spring wildflowers. Early summer days are hot and dry with temperatures in the 100's and humidity below 10%. Late summer monsoons bring fantastic lighting and furious thunderstorms. Temperatures drop to 90s, however the humidity increases. Plan on getting up early and taking an afternoon siesta in the shade if you plan to visit us in the summertime.

Dress for the Weather

A wide-brimmed hat, comfortable clothing, and sturdy walking shoes or boots are necessary for anyone planning to hike. Sunscreen is a must. Hikers must always carry plenty of water. One gallon per person per day is recommended.

 
Temperature and Rainfall Chart For Organ Pipe

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Average Max °F

72

72

77

85

95

102

103

102

99

87

75

68

Average Min °F

42

42

46

52

60

70

75

74

68

57

46

39

Average Days Over 100°F

0

0

0

0

8

20

25

22

16

1

0

0

Average Rainfall/(in)

0.92

0.64

0.89

0.47

0.01

0.38

0.98

1.41

0.65

0.58

0.27

0.52

 

Did You Know?

Night Blooming Cereus Cactus

Most of the year this night-blooming cereus cactus looks like ugly brown sticks, but for one night only the flower opens and smells like a rose. To see one bloom is one of the greatest treats in the Sonoran Desert