Soderman Building · Photo: Ammodramus · CC0Miami reaches 100° on about 38 days a year, more than 98% of U.S. towns
A typical July afternoon reaches 99°, a January night drops to 34°, and snow is almost unheard of.
A year in Miami at a glance
Each month’s typical high and low, and what it brings.
What stands out about Miami’s climate
Compared with towns across the U.S., with Miami’s place in Arizona beside it.
What a year in Miami feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 279 frost-free days a year
In half of years the last 32° night comes by February 24 and the first by December 1. Frost and day counts come from NOAA’s station at Miami, AZ, 0.7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Miami’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 23°. 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 16 inches of rain a year
August is the wettest month and June the driest. Rain falls on about 51 days a year. Snow is rare: about 0.0" in a normal year at Miami, AZ, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Miami
43% of the work is heating, so air conditioning is the bigger bill. 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 Miami, AZ.
Living with Miami’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
279 frost-free days in zone 9a. The last frost comes by Feb 24 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 1.
Months with highs of 62–84° and lows of 40° or more: March, April, October and November. 0.6 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Miami from natural hazards, river flooding is the largest share (81%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Miami and its neighbors
Every town next door is within a degree of Miami in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Miami’s, 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 |
|---|---|---|---|---|
| Miami, AZ | 34° | 99° | 16" | 0.0" |
| Valle Vista, CA | 38° | 98° | 12" | 0.0" |
| Monahans, TX | 30° | 98° | 12" | 0.7" |
| Ivins, UT | 32° | 100° | 11" | 1.2" |
| Carlsbad, NM | 29° | 97° | 13" | 2.7" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Miami averaged 1.8° warmer than the 1900s. The biggest change is in January (+2.7°).
A bigger shift than in 77% 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 Miami compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Miami’s place among Arizona’s.
Miami weather by month
Highs, lows and precipitation from NOAA’s grid at Miami’s center; snow, wet days and snow on the ground from Miami, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 60° | 34° | 2.1" | 0.0" | 5 | 0 | 43° – 53° |
| February | 63° | 37° | 2.0" | 0.0" | 5 | 0 | 45° – 55° |
| March | 70° | 41° | 1.5" | 0.0" | 4 | 0 | 48° – 61° |
| April | 78° | 46° | 0.5" | 0.0" | 3 | 0 | 56° – 67° |
| May | 87° | 54° | 0.3" | 0.0" | 2 | 0 | 64° – 76° |
| June | 97° | 63° | 0.2" | 0.0" | 2 | 0 | 74° – 83° |
| July | 99° | 70° | 2.1" | 0.0" | 7 | 0 | 81° – 87° |
| August | 96° | 68° | 2.2" | 0.0" | 9 | 0 | 79° – 86° |
| September | 92° | 62° | 1.2" | 0.0" | 4 | 0 | 73° – 80° |
| October | 82° | 51° | 1.0" | 0.0" | 4 | 0 | 63° – 72° |
| November | 69° | 40° | 1.1" | 0.0" | 3 | 0 | 47° – 61° |
| December | 59° | 34° | 1.8" | 0.0" | 5 | 0 | 43° – 51° |
| Year | 79° | 50° | 15.9" | 0.0" | 51 | 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 61°. July is the most reliable, staying within 6°.
Where Miami’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 Miami’s center.
- Snow: Miami, AZ (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Miami, AZ, 0.7 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 Miami’s climate
What is the weather like in Miami?
A typical July afternoon reaches 99°, a January night drops to 34°, and snow is almost unheard of. Milder January nights than 79% of U.S. towns; hotter July afternoons than all but 175 U.S. towns.
How cold does it get in Miami in winter?
December nights average 34°. About 25 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 43°.
How much snow does Miami get?
About 0.0 inches in a normal winter at Miami, AZ, so most winters see none.
How hot does it get in Miami?
July, with a typical high of 99° and a low of 70°. About 122 days a year reach 90° and 38 reach 100° (Miami, AZ).
When is the first and last frost in Miami?
In half of years the last spring frost (32°) comes by February 24 and the first fall frost by December 1, about 279 frost-free days, at Miami, AZ.
What growing zone is Miami in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 23°.
What is the best time of year to visit Miami?
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 Miami getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 77% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Miami.
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.