Bylas reaches 100° on about 46 days a year, more than all but 160 U.S. towns
In January the night’s low is typically 31°. Its yearly precipitation falls short of 97% of U.S. towns. The latest 30-year average runs 1.7° warmer than 1901–2000’s, with March up the most. Keep the boiler serviced for the months from December to January, which average under 50°.
A year in Bylas at a glance
Each month’s typical high and low, and what it brings.
What stands out about Bylas’ climate
Compared with towns across the U.S., with Bylas’ place in Arizona beside it.
What a year in Bylas feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 217 frost-free days a year
In half of years the last 32° night comes by April 1 and the first by November 6. Frost and day counts come from NOAA’s station at Ft Thomas 2 Sw, AZ, 11 miles from the town’s center, 210 ft higher.
The 2023 USDA map puts Bylas’ center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 16°. 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 11 inches of rain a year
August is the wettest month and June the driest. Rain falls on about 48 days a year. Snow is rare: about 0.0" in a normal year at San Carlos Reservoir, AZ, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Bylas
52% of the work is heating. Months averaging under 55° run from November 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 Ft Thomas 2 Sw, AZ.
Living with Bylas’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
217 frost-free days in zone 8b. The last frost comes by Apr 1 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 6.
Months with highs of 62–84° and lows of 40° or more: March, April and October. 1.8 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Bylas from natural hazards, river flooding is the largest share (45%); heat waves, cold waves, winter storms and ice storms together are 28%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Bylas and similar climates
TownRatings has no climate map of the towns around Bylas yet.
Climates most like Bylas’, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Bylas, AZ | 31° | 101° | 11" | 0.0" |
| Ivins, UT | 32° | 100° | 11" | 1.2" |
| Monahans, TX | 30° | 98° | 12" | 0.7" |
| Silver Lakes, CA | 35° | 100° | 4" | 0.0" |
| Summerlin South, NV | 35° | 102° | 5" | 0.2" |
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 Bylas averaged 1.7° warmer than the 1900s. The biggest change is in March (+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 Bylas compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Bylas’ place among Arizona’s.
Bylas weather by month
Highs, lows and precipitation from NOAA’s grid at Bylas’ center; snow, wet days and snow on the ground from San Carlos Reservoir, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 61° | 31° | 1.1" | 0.0" | 5 | 0 | 41° – 52° |
| February | 66° | 35° | 1.1" | 0.0" | 5 | 0 | 45° – 56° |
| March | 74° | 40° | 0.7" | 0.0" | 4 | 0 | 50° – 62° |
| April | 82° | 46° | 0.3" | 0.0" | 2 | 0 | 58° – 69° |
| May | 91° | 54° | 0.3" | 0.0" | 2 | 0 | 67° – 77° |
| June | 100° | 64° | 0.2" | 0.0" | 1 | 0 | 77° – 85° |
| July | 101° | 71° | 1.8" | 0.0" | 6 | 0 | 83° – 89° |
| August | 98° | 70° | 2.1" | 0.0" | 7 | 0 | 81° – 90° |
| September | 94° | 63° | 1.1" | 0.0" | 5 | 0 | 74° – 82° |
| October | 84° | 50° | 0.8" | 0.0" | 3 | 0 | 64° – 71° |
| November | 71° | 38° | 0.7" | 0.0" | 3 | 0 | 47° – 63° |
| December | 60° | 31° | 1.0" | 0.0" | 5 | 0 | 42° – 50° |
| Year | 82° | 49° | 11.1" | 0.0" | 48 | 0 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 47° to 63°. July is the most reliable, staying within 6°.
Where Bylas’ 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 Bylas’ center.
- Snow: San Carlos Reservoir, AZ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Ft Thomas 2 Sw, AZ, 11 miles from the town’s center, 210 ft higher; 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 Bylas’ climate
What is the weather like in Bylas?
A typical July afternoon reaches 101°, a January night drops to 31°, and snow is almost unheard of. Milder January nights than 73% of U.S. towns; hotter July afternoons than all but 122 U.S. towns.
How cold does it get in Bylas in winter?
December nights average 31°. About 82 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 42°.
How much snow does Bylas get?
About 0.0 inches in a normal winter at San Carlos Reservoir, AZ, so most winters see none.
How hot does it get in Bylas?
July, with a typical high of 101° and a low of 71°. About 136 days a year reach 90° and 46 reach 100° (Ft Thomas 2 Sw, AZ).
When is the first and last frost in Bylas?
In half of years the last spring frost (32°) comes by April 1 and the first fall frost by November 6, about 217 frost-free days, at Ft Thomas 2 Sw, AZ.
What growing zone is Bylas in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 16°.
What is the best time of year to visit Bylas?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Bylas 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 Bylas.
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.