Weather

Woman photographs vibrantly colored clouds over lake. The image is repeated in her camera viewscreen.
The high clouds of the summer monsoon season lend to amazing sunsets.

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National Weather Service Marine Forecasts

Check the Marine webpage for 3-day forecasts and specific information on Lake Powell conditions. Mouse over Lake Powell on the map for an overview, then select either Arizona or Utah side for in-depth area forecasts.

 

General Outlook

The weather in Glen Canyon National Recreation Area is usually typical for the high deserts. Summers are extremely hot with little, if any, shade. Winters are moderately cold with night time lows often below freezing. Spring weather is highly variable and unpredictable with extended periods of winds. Fall weather is usually nice and mild, a great time to beat the heat (and the crowds!).

Temperatures can range from 110° F (38°C) in June & July to 0° F (-16°C) in December & January. Precipitation is generally light (less than 6 inches [15.2cm] annually) though heavy rains and flash flooding is possible during the summer and fall "monsoons."

We recommend lightweight, light colored clothing for summer, including a hat. Layers of clothing are best for other times of the year.

Lake Levels

The US Bureau of Reclamation operates and regulates Lake Powell's water levels. View their real-time and historic information on lake operations, including the current levels.

 

Average Weather at Glen Canyon

Temperatures

Average High

Average Low

Lake Surface

Rain/Snow

January

46°F/8°C)

30°F/-1°C

46°F/8°C

0.47in/1.2cm

February

53°F/12°C

34°F/1°C

46°F/8°C

0.52in/1.3cm

March

63°F/17°C

41°F/5°C

54°F/12°C

0.46in/1.2cm

April

72°F/22°C

47°F/8°C

54°F/12°C

0.26in/0.66cm

May

82°F/28°C

56°F/13°C

64°F/18°C

0.35in/0.89cm

June

94°F/34°C

66°F/19°C

78°F/26°C

0.13in/0.33cm

July

98°F/37°C

73°F/23°C

78°F/26°C

0.58in/1.5cm

August

95°F/35°C

70°F/21°C

79°F/26°C

0.74in/1.9cm

September

87°F/31°C

62°F/17°C

67°F/19°C

0.51in/1.3cm

October

72°F/22°C

49°F/9°C

67°F/19°C

0.81in/2.0cm

November

57°F/14°C

38°F/3°C

61°F/16°C

0.40in/1.0cm

December

45°F/7°C

27°F/-3°C

51°F/11°C

0.41in/1.0cm
 

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Last updated: June 21, 2022

Contact Info

Mailing Address:

PO Box 1507
Page, AZ 86040

Phone:

928 608-6200
Receptionist available at Glen Canyon Headquarters from 7 am to 4 pm MST, Monday through Friday. The phone is not monitored when the building is closed. If you are having an emergency, call 911 or hail National Park Service on Marine Band 16.

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