Beaver Dam reaches 100° on about 99 days a year, more than all but 69 U.S. towns
A typical July afternoon reaches 107°, a January night drops to 35°.
A year in Beaver Dam at a glance
Each month’s typical high and low, and what it brings.
What stands out about Beaver Dam’s climate
Compared with towns across the U.S., with Beaver Dam’s place in Arizona beside it.
What a year in Beaver Dam feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 251 frost-free days a year
In half of years the last 32° night comes by March 7 and the first by November 19. Frost and day counts come from NOAA’s station at Beaver Dam, AZ, 0.6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Beaver Dam’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 19°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 7 inches of rain a year
February is the wettest month and June the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Beaver Dam
39% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Beaver Dam, AZ.
Living with Beaver Dam’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
251 frost-free days in zone 8b. The last frost comes by Mar 7 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 19.
Months with highs of 62–84° and lows of 40° or more: March, April, October and November. 15 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Beaver Dam from natural hazards, wildfire is the largest share (49%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Beaver Dam and similar climates
TownRatings has no climate map of the towns around Beaver Dam yet.
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Beaver Dam averaged 1.7° warmer than the 1900s. The biggest change is in January (+2.6°).
A bigger shift than in 69% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Beaver Dam compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Beaver Dam’s place among Arizona’s.
Beaver Dam weather by month
Highs, lows and precipitation from NOAA’s grid at Beaver Dam’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 60° | 35° | 0.8" | 43° – 56° |
| February | 65° | 39° | 1.1" | 44° – 59° |
| March | 73° | 45° | 0.9" | 51° – 67° |
| April | 81° | 50° | 0.5" | 59° – 71° |
| May | 91° | 59° | 0.3" | 67° – 81° |
| June | 101° | 68° | 0.2" | 77° – 90° |
| July | 107° | 75° | 0.4" | 87° – 94° |
| August | 105° | 74° | 0.6" | 86° – 94° |
| September | 97° | 65° | 0.4" | 77° – 85° |
| October | 84° | 54° | 0.7" | 64° – 75° |
| November | 69° | 41° | 0.5" | 47° – 62° |
| December | 58° | 34° | 0.7" | 41° – 51° |
| Year | 82° | 53° | 7.0" |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 51° to 67°. July is the most reliable, staying within 7°.
Where Beaver Dam’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Beaver Dam’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Beaver Dam, AZ, 0.6 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Beaver Dam’s climate
What is the weather like in Beaver Dam?
A typical July afternoon reaches 107°, a January night drops to 35°. Milder January nights than 81% of U.S. towns; hotter July afternoons than all but 33 U.S. towns.
How cold does it get in Beaver Dam in winter?
December nights average 34°. About 41 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 41°.
How hot does it get in Beaver Dam?
July, with a typical high of 107° and a low of 75°. About 151 days a year reach 90° and 99 reach 100° (Beaver Dam, AZ).
When is the first and last frost in Beaver Dam?
In half of years the last spring frost (32°) comes by March 7 and the first fall frost by November 19, about 251 frost-free days, at Beaver Dam, AZ.
What growing zone is Beaver Dam in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 19°.
What is the best time of year to visit Beaver Dam?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Beaver Dam getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 69% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Beaver Dam.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.