What is the hottest month at Grand Canyon?

July, with an average high of 84°F and an average low of 59°F at South Rim (visitor center) (NOAA 1991–2020 normals). The station averages 7 days a year at or above 90°F.

How cold does Grand Canyon get in winter?

December is the coldest month, averaging a low of 24°F and a high of 43°F at South Rim (visitor center). About 114 nights a year drop to freezing or below.

Does it snow at Grand Canyon?

South Rim (visitor center) records almost no snowfall (no snow normals). Higher elevations in the park can differ.

When is the rainy season at Grand Canyon?

August is the wettest month on average (2.7 inches of precipitation at South Rim (visitor center)); the station's annual total is 17.0 inches.

How many hours of daylight does Grand Canyon get?

About 14h 35m on June 15 and 9h 44m on December 15 (sunrise 5:11 AM, sunset 7:47 PM in June; 7:32 AM to 5:15 PM in December, America/Phoenix time).

What is the best month to visit Grand Canyon for weather?

By NOAA's normals, average highs sit between 55°F and 85°F in April, May, June, July, August, September and October. Weather in the park varies with elevation; this is the South Rim (visitor center) station.

Weather by month

Grand Canyon weather, month by month

Last verified October 6, 2026NOAA 1991–2020 normalsAmerica/Phoenix time

Average highs, lows, rain, snow and daylight for every month. Measured at the South Rim (visitor center) (7,083 ft, 0 mi from Grand Canyon Visitor Center (South Rim)) — with North Rim (Bright Angel Ranger Station, 8,000 ft) below, because the park's weather changes with elevation.

At Sunset, swirling rain clouds above a vast canyon filled with colorful peaks and cliff walls. — Photo: NPS/M. Quinn

Jul high: 84°F; hottest month
Dec low: 24°F; coldest month
Rain + snowmelt: 17.0in / yr; wettest: Aug
Snowfall: —in / yr; rare
Days ≥ 90°F: 7/ yr
Nights ≤ 32°F: 114/ yr

South Rim (visitor center)

Month by month

Normals are 30-year averages (1991–2020). Crowds = each month’s share of the park’s busiest month, from NPS visitor counts. Sunrise and sunset are for the 15th of each month in 2027.

Average high and low, every monthbars run from the low to the high · tan strip = precipitation

Month	High	Low	Rain	Wet days	Sunrise	Sunset	Daylight	Crowds
Jan	42°	26°	1.8″	—	7:38 AM	5:37 PM	9h 59m	32
Feb	45°	27°	1.4″	—	7:16 AM	6:09 PM	10h 53m	34
Mar	52°	31°	1.3″	—	6:39 AM	6:35 PM	11h 56m	67
Apr	59°	36°	1.2″	—	5:56 AM	7:02 PM	13h 06m	85
May	68°	44°	0.7″	—	5:23 AM	7:27 PM	14h 04m	95
Jun	80°	55°	0.4″	—	5:11 AM	7:47 PM	14h 35m	94
Jul	84°	59°	2.4″	—	5:23 AM	7:46 PM	14h 22m	100
Aug	81°	58°	2.7″	—	5:47 AM	7:19 PM	13h 32m	90
Sep	75°	53°	1.6″	—	6:11 AM	6:37 PM	12h 26m	81
Oct	63°	41°	1.4″	—	6:35 AM	5:53 PM	11h 18m	83
Nov	51°	33°	1.1″	—	7:05 AM	5:21 PM	10h 16m	62
Dec	43°	24°	1.2″	—	7:32 AM	5:15 PM	9h 44m	56

Also measured at

North Rim (Bright Angel Ranger Station, 8,000 ft)

The North Rim, open mid-May to mid-October. 8,000 ft, 11.1 mi from Grand Canyon Visitor Center (South Rim).

Month	High	Low	Rain	Snow	Wet days
Jan	36°	18°	3.6″	33.0″	7
Feb	37°	19°	3.5″	26.6″	7
Mar	44°	23°	3.0″	23.6″	6
Apr	52°	28°	1.6″	11.4″	5
May	62°	36°	0.8″	2.7″	4
Jun	73°	43°	0.4″	0.2″	2
Jul	77°	49°	1.8″	—	9
Aug	74°	48°	2.8″	—	11
Sep	67°	42°	1.9″	—	7
Oct	56°	33°	1.8″	3.4″	5
Nov	45°	24°	1.4″	10.3″	4
Dec	36°	17°	1.9″	15.0″	7

How to read this

These are NOAA’s official 1991–2020 climate normals for one weather station, not a model of the whole park. The station is the one with complete temperature and precipitation normals nearest to a visitor center (we chose South Rim (visitor center) because it is Grand Canyon Visitor Center). Highs and lows are daily averages for the month; “wet days” are days with at least 0.01 inch of precipitation. Mountain parks can be 10–20 °F cooler at their high points than at the station, and the NPS weather page for Grand Canyon is the place for current conditions and seasonal closures.

Sunrise and sunset are computed with the NOAA solar equations for the park’s coordinates and shown in America/Phoenix time for the 15th of each month of 2027; they are accurate to about a minute.

Sources · 3

1.U.S. Climate Normals 1991–2020 — monthly normals station inventory · National Centers for Environmental Information (NOAA)
2.Grand Canyon National Park — Weather (nps.gov) · National Park Service
3.Grand Canyon National Park — Visitor Use Statistics · National Park Service (IRMA)

FAQ

Grand Canyon weather questions

What is the hottest month at Grand Canyon?: July, with an average high of 84°F and an average low of 59°F at South Rim (visitor center) (NOAA 1991–2020 normals). The station averages 7 days a year at or above 90°F.
How cold does Grand Canyon get in winter?: December is the coldest month, averaging a low of 24°F and a high of 43°F at South Rim (visitor center). About 114 nights a year drop to freezing or below.
Does it snow at Grand Canyon?: South Rim (visitor center) records almost no snowfall (no snow normals). Higher elevations in the park can differ.
When is the rainy season at Grand Canyon?: August is the wettest month on average (2.7 inches of precipitation at South Rim (visitor center)); the station's annual total is 17.0 inches.
How many hours of daylight does Grand Canyon get?: About 14h 35m on June 15 and 9h 44m on December 15 (sunrise 5:11 AM, sunset 7:47 PM in June; 7:32 AM to 5:15 PM in December, America/Phoenix time).
What is the best month to visit Grand Canyon for weather?: By NOAA's normals, average highs sit between 55°F and 85°F in April, May, June, July, August, September and October. Weather in the park varies with elevation; this is the South Rim (visitor center) station.

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