Wahweap, Arizona climate: Climate normals at a NOAA weather station
Wahweap's normal year runs from 29°F January nights to 99°F July afternoons, with 6.5 inches of precipitation and less than an inch of snow (0.6 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.2°C, January lows of −2°C, July highs of 37°C, 166 mm of precipitation a year.
- NOAA stationWahweap
- Station IDUSC00029114
- Location37.00°N 111.49°W
- Elevation3,730 ft (1,137 m)
On October 23, the normal high in Wahweap is 70°F and the normal low 46°F, and the chance of measurable rain or snow is 11%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Wahweap.
- Jan 48° 29°
- Feb 54° 33°
- Mar 64° 40°
- Apr 73° 46°
- May 83° 56°
- Jun 95° 66°
- Jul 99° 73°
- Aug 96° 71°
- Sep 88° 62°
- Oct 74° 49°
- Nov 58° 37°
- Dec 47° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Wahweap each month?
July is the warmest month, with normal highs of 99°F; January the coldest, with normal lows of 29°F. The most precipitation falls in October (0.90 in), the least in June (0.15 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 48°F | 29°F | 38.3°F | 0.73 | 4 | <1 | 25 | 9 h 50 min |
| February | 54°F | 33°F | 43.0°F | 0.50 | 5 | <1 | 16 | 10 h 50 min |
| March | 64°F | 40°F | 51.8°F | 0.61 | 4 | <1 | 5 | 11 h 50 min |
| April | 73°F | 46°F | 59.1°F | 0.32 | 3 | 1 | 1 | 13 h 10 min |
| May | 83°F | 56°F | 69.4°F | 0.52 | 2 | 10 | <1 | 14 h 10 min |
| June | 95°F | 66°F | 80.5°F | 0.15 | 1 | 23 | <1 | 14 h 40 min |
| July | 99°F | 73°F | 86.2°F | 0.53 | 2 | 29 | <1 | 14 h 30 min |
| August | 96°F | 71°F | 83.2°F | 0.75 | 4 | 27 | <1 | 13 h 40 min |
| September | 88°F | 62°F | 75.1°F | 0.59 | 3 | 14 | <1 | 12 h 30 min |
| October | 74°F | 49°F | 61.6°F | 0.90 | 4 | 1 | <1 | 11 h 20 min |
| November | 58°F | 37°F | 47.8°F | 0.45 | 2 | <1 | 8 | 10 h 10 min |
| December | 47°F | 30°F | 38.4°F | 0.50 | 3 | <1 | 25 | 9 h 40 min |
| Year (annual) | 73°F | 49°F | 61.2°F | 6.55 | 36 | 106 | 81 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 9°C | −2°C | 3.5°C | 19 mm |
| February | 12°C | 0°C | 6.1°C | 13 mm |
| March | 18°C | 4°C | 11.0°C | 15 mm |
| April | 23°C | 8°C | 15.1°C | 8 mm |
| May | 28°C | 13°C | 20.8°C | 13 mm |
| June | 35°C | 19°C | 26.9°C | 4 mm |
| July | 37°C | 23°C | 30.1°C | 13 mm |
| August | 35°C | 22°C | 28.4°C | 19 mm |
| September | 31°C | 17°C | 23.9°C | 15 mm |
| October | 23°C | 10°C | 16.4°C | 23 mm |
| November | 15°C | 3°C | 8.8°C | 11 mm |
| December | 8°C | −1°C | 3.6°C | 13 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00029114; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Wahweap?
Normal highs sit between 65°F and 85°F in April, May and October. Of those, May has the fewest days with rain (2).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00029114.
When is the last frost at Wahweap?
In Wahweap, the last spring frost (32°F) comes after March 14 in half of years and after April 7 in one year in ten; the first autumn frost comes before November 16 in half of years and before November 2 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 141 year in 10 after April 7; 9 in 10 after February 25
- First autumn frost, half of years before
- November 161 year in 10 before November 2; 9 in 10 before November 27
NOAA puts the median frost-free season at 244 days, and the season without a hard freeze (28°F) at 274 days.
A hard freeze (28°F) comes after February 25 in half of springs and before November 26 in half of autumns.
Frost dates for every NOAA station in Arizona · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00029114. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Wahweap?
In a normal year in Wahweap, 106 days a year reach 90°F (35 of them 100°F or more), 81 nights fall to 32°F or colder and 36 days bring measurable precipitation.
- Days at 90°F or more
- 106a normal year
- Days at 100°F or more
- 35a normal year
- Nights at 32°F or colder
- 81a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 36a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00029114.
How sunny is it at Wahweap?
Over a year 88% of the sunlight that would reach the ground under clear skies gets through the clouds at Wahweap, 5.6 kWh per square metre a day. June is the sunniest month (93%) and December the cloudiest (80%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 82% | 3.0 |
| February | 83% | 4.0 |
| March | 88% | 5.6 |
| April | 88% | 7.0 |
| May | 89% | 7.8 |
| June | 93% | 8.4 |
| July | 86% | 7.3 |
| August | 86% | 6.7 |
| September | 91% | 6.0 |
| October | 90% | 4.7 |
| November | 88% | 3.5 |
| December | 80% | 2.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Wahweap record?
A normal year at Wahweap brings 3,597 heating degree days, 33% fewer than the median U.S. place (5,373), and 2,247 cooling degree days, 2.5 times the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,241 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 829 | 0 |
| February | 616 | 0 |
| March | 409 | 1 |
| April | 201 | 24 |
| May | 45 | 183 |
| June | 2 | 465 |
| July | 0 | 657 |
| August | 0 | 564 |
| September | 7 | 308 |
| October | 149 | 44 |
| November | 515 | 0 |
| December | 824 | 0 |
| Year (annual) | 3,597 | 2,247 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00029114. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Wahweap's climate compare?
Wahweap is warmer than 32 of the 97 places with their own NOAA record in Arizona, and wetter than 13. Across the 7,247 U.S. stations with normals, its annual mean of 61.2°F is warmer than 78%.
In the Köppen classification computed from these normals, Wahweap is BWk: cold desert. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Wahweap's climate
What is the coldest month at Wahweap?
January, with a normal high of 48°F and a normal low of 29°F. The warmest is July (99°F by day, 73°F at night).
Does it snow at Wahweap?
Rarely: NOAA's normal is 0.6 inch a year.
What is the rainiest month at Wahweap?
October, with 0.90 in of precipitation in a normal year; the driest is June with 0.15 in.
How late can frost come at Wahweap?
In half of years the last 32°F night comes after March 14; in one year in ten it comes after April 7. Waiting until April 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arizona climateThe statewide normals and every place in the state
- Page, AZ6 miles from this station, 60.8°F a year
- Lees Ferry, AZ11 miles from this station, 63.1°F a year
- Big Water, UT11 miles from this station, 57.6°F a year
- Paria Ranger Station, UT24 miles from this station, 56.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made