Beaver Dam, Arizona climate: Normal weather by month, frost dates and records
Beaver Dam's normal year runs from 32°F December nights to 109°F July afternoons, with 7.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 20.1°C, December lows of 0°C, July highs of 43°C, 178 mm of precipitation a year.
- NOAA stationBeaver Dam
- Station IDUSC00020672
- Location36.91°N 113.94°W
- Elevation1,931 ft (589 m)
- Population (census place)1,590
On October 23, the normal high in Beaver Dam is 83°F and the normal low 51°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 Beaver Dam.
- Jan 62° 33°
- Feb 66° 36°
- Mar 75° 43°
- Apr 82° 48°
- May 93° 58°
- Jun 104° 65°
- Jul 109° 74°
- Aug 107° 73°
- Sep 100° 64°
- Oct 86° 53°
- Nov 72° 40°
- Dec 60° 32°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Beaver Dam each month?
July is the warmest month, with normal highs of 109°F; December the coldest, with normal lows of 32°F. The most precipitation falls in February (1.20 in), the least in June (0.16 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 62°F | 33°F | 47.3°F | 0.88 | 5 | <1 | 13 | 9 h 50 min |
| February | 66°F | 36°F | 51.0°F | 1.20 | 6 | <1 | 7 | 10 h 50 min |
| March | 75°F | 43°F | 58.8°F | 0.87 | 5 | 1 | 2 | 11 h 50 min |
| April | 82°F | 48°F | 65.1°F | 0.50 | 4 | 6 | <1 | 13 h 10 min |
| May | 93°F | 58°F | 75.2°F | 0.28 | 2 | 19 | <1 | 14 h 10 min |
| June | 104°F | 65°F | 84.5°F | 0.16 | 1 | 28 | <1 | 14 h 40 min |
| July | 109°F | 74°F | 91.4°F | 0.38 | 3 | 31 | <1 | 14 h 30 min |
| August | 107°F | 73°F | 90.2°F | 0.44 | 3 | 31 | <1 | 13 h 40 min |
| September | 100°F | 64°F | 82.0°F | 0.34 | 3 | 27 | <1 | 12 h 30 min |
| October | 86°F | 53°F | 69.6°F | 0.69 | 3 | 10 | <1 | 11 h 20 min |
| November | 72°F | 40°F | 56.0°F | 0.45 | 3 | <1 | 4 | 10 h 10 min |
| December | 60°F | 32°F | 46.0°F | 0.83 | 5 | <1 | 15 | 9 h 40 min |
| Year (annual) | 85°F | 52°F | 68.1°F | 7.02 | 42 | 151 | 41 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 17°C | 1°C | 8.5°C | 22 mm |
| February | 19°C | 2°C | 10.6°C | 30 mm |
| March | 24°C | 6°C | 14.9°C | 22 mm |
| April | 28°C | 9°C | 18.4°C | 13 mm |
| May | 34°C | 14°C | 24.0°C | 7 mm |
| June | 40°C | 18°C | 29.2°C | 4 mm |
| July | 43°C | 23°C | 33.0°C | 10 mm |
| August | 42°C | 23°C | 32.3°C | 11 mm |
| September | 38°C | 18°C | 27.8°C | 9 mm |
| October | 30°C | 12°C | 20.9°C | 18 mm |
| November | 22°C | 5°C | 13.3°C | 11 mm |
| December | 16°C | 0°C | 7.8°C | 21 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Lytle Ranch (16 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00020672; 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.
When is the best weather to visit Beaver Dam?
Normal highs sit between 65°F and 85°F in February, March, April and November. Of those, November has the fewest days with rain (3).
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 USC00020672.
When is the last frost in Beaver Dam?
In Beaver Dam, the last spring frost (32°F) comes after March 7 in half of years and after April 10 in one year in ten; the first autumn frost comes before November 19 in half of years and before November 1 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 71 year in 10 after April 10; 9 in 10 after February 16
- First autumn frost, half of years before
- November 191 year in 10 before November 1; 9 in 10 before December 5
NOAA puts the median frost-free season at 251 days, and the season without a hard freeze (28°F) at 282 days.
A hard freeze (28°F) comes after February 20 in half of springs and before December 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Beaver Dam in zone 9a in ZIP code 89027, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Beaver Dam's NOAA station is in zone 8b: the coldest night of a typical year reaches 19°F (18 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Arizona · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00020672; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 in Beaver Dam?
In a normal year in Beaver Dam, 151 days a year reach 90°F (99 of them 100°F or more), 41 nights fall to 32°F or colder and 42 days bring measurable precipitation.
- Days at 90°F or more
- 151a normal year
- Days at 100°F or more
- 99a normal year
- Nights at 32°F or colder
- 41a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 42a normal year
The highest temperature in this station's record (since 1951) is 121°F, on June 30, 2013; the lowest is 4°F, on December 23, 1990.
The wettest calendar year on that record is 1978, with 14.32 in; the snowiest season is 1978–79, with 3.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00020672; records: ACIS (NOAA Regional Climate Centers), station USC00020672. Records use complete months only; a month missing more than three days is left out.
How sunny is Beaver Dam?
Over a year 88% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Beaver Dam, 5.5 kWh per square metre a day. June is the sunniest month (94%) and December the cloudiest (79%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 82% | 3.0 |
| February | 81% | 3.9 |
| March | 85% | 5.4 |
| April | 88% | 6.8 |
| May | 90% | 7.8 |
| June | 94% | 8.5 |
| July | 87% | 7.3 |
| August | 89% | 6.8 |
| September | 92% | 6.0 |
| October | 90% | 4.6 |
| November | 87% | 3.4 |
| December | 79% | 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 much heating and cooling does Beaver Dam need?
A normal year in Beaver Dam brings 2,182 heating degree days, 59% fewer than the median U.S. place (5,373), and 3,349 cooling degree days, 3.7 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 7,022 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 547 | 0 |
| February | 392 | 0 |
| March | 216 | 24 |
| April | 93 | 97 |
| May | 16 | 332 |
| June | 1 | 586 |
| July | 0 | 818 |
| August | 0 | 780 |
| September | 1 | 511 |
| October | 44 | 187 |
| November | 285 | 15 |
| December | 587 | 0 |
| Year (annual) | 2,182 | 3,349 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00020672. 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 Beaver Dam's climate compare?
Beaver Dam is warmer than 60 of the other 96 places with their own NOAA record in Arizona, and wetter than 16. Across the 7,247 U.S. stations with normals, its annual mean of 68.1°F is warmer than 93%.
In the Köppen classification computed from these normals, Beaver Dam is BWh: hot 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 Beaver Dam's climate
What is the coldest month in Beaver Dam?
December, with a normal high of 60°F and a normal low of 32°F. The warmest is July (109°F by day, 74°F at night).
Does it snow in Beaver Dam?
Yes. NOAA publishes no 1991-2020 snowfall normal for Beaver Dam's NOAA station; the nearest record that keeps one, Lytle Ranch (16 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in Beaver Dam?
February, with 1.20 in of precipitation in a normal year; the driest is June with 0.16 in.
What plant hardiness zone is Beaver Dam in?
The USDA's 2023 map puts Beaver Dam in zone 9a in ZIP code 89027, the nearest ZIP area. By the same method at Beaver Dam's NOAA station, the coldest night of a typical year reaches 19°F (18 years, 1991-2020): zone 8b.
How late can frost come in Beaver Dam?
In half of years the last 32°F night comes after March 7; in one year in ten it comes after April 10. Waiting until April 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arizona climateThe statewide normals and every place in the state
- Bunkerville, NV13 miles from this station, 65.5°F a year
- Lytle Ranch, UT16 miles from this station, 62.8°F a year
- St. George, UT24 miles from this station, 62.7°F a year
- Veyo, UT34 miles from this station, 56.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made