Cartmill Farm House · Photo: Melodibit · CC BY-SA 3.0Piedmont reaches 100° on about 14 days a year, more than 93% of U.S. towns
The coldest hours of a January night bottom out at 27° on average. From frosty January to warm July, readings climb 67°. By precipitation alone, it ranks drier than 76% of U.S. towns. The frost-free window for a garden runs roughly April 2 to November 4.
A year in Piedmont at a glance
Each month’s typical high and low, and what it brings.
What stands out about Piedmont’s climate
Compared with towns across the U.S., with Piedmont’s place in Oklahoma beside it.
What a year in Piedmont feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 216 frost-free days a year
In half of years the last 32° night comes by April 2 and the first by November 4. Frost and day counts come from NOAA’s station at Oklahoma City Post Airport, 11 miles from the town’s center, 110 ft higher.
The 2023 USDA map puts Piedmont’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 7°. 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 6 inches of snow a winter
Snow, measured at Piedmont 3 N, OK, falls mostly in January. Precipitation (rain plus melted snow) adds up to 35 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 77 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Piedmont
61% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Oklahoma City Post Airport.
Living with Piedmont’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
216 frost-free days in zone 7b. The last frost comes by Apr 2 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 4.
Months with highs of 62–84° and lows of 40° or more: April, May and October. 3.7 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Piedmont from natural hazards, river flooding is the largest share (33%); heat waves, cold waves, winter storms and ice storms together are 29%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Piedmont and its neighbors
Every town next door is within a degree of Piedmont in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Piedmont’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 |
|---|---|---|---|---|
| Piedmont, OK | 27° | 94° | 35" | 5.8" |
| Bridgeport, TX | 32° | 96° | 34" | 1.8" |
| Hutchinson, KS | 21° | 93° | 31" | 6.9" |
| Oakhurst, CA | 34° | 95° | 29" | 2.5" |
| Lancaster, SC | 31° | 91° | 43" | 2.6" |
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 Piedmont averaged 0.9° warmer than the 1900s. The biggest change is in January (+2.4°).
A smaller shift than in 84% 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 Piedmont compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Piedmont’s place among Oklahoma’s.
Piedmont weather by month
Highs, lows and precipitation from NOAA’s grid at Piedmont’s center; snow, wet days and snow on the ground from Piedmont 3 N, OK. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 49° | 27° | 1.2" | 2.0" | 5 | 33° – 47° |
| February | 54° | 31° | 1.5" | 0.9" | 5 | 36° – 51° |
| March | 63° | 40° | 2.5" | 1.0" | 7 | 44° – 61° |
| April | 72° | 48° | 3.5" | 0.0" | 6 | 54° – 67° |
| May | 80° | 58° | 5.0" | 0.0" | 9 | 65° – 76° |
| June | 89° | 67° | 4.8" | 0.0" | 9 | 73° – 85° |
| July | 94° | 71° | 3.4" | 0.0" | 5 | 79° – 91° |
| August | 93° | 70° | 3.5" | 0.0" | 7 | 75° – 89° |
| September | 85° | 62° | 3.1" | 0.0" | 6 | 70° – 81° |
| October | 74° | 50° | 3.3" | 0.0" | 7 | 55° – 68° |
| November | 61° | 39° | 2.0" | 0.3" | 5 | 43° – 57° |
| December | 51° | 30° | 1.6" | 1.6" | 5 | 30° – 45° |
| Year | 72° | 49° | 35.3" | 5.8" | 77 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 44° to 61°. May is the most reliable, staying within 11°.
Where Piedmont’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 Piedmont’s center.
- Snow: Piedmont 3 N, OK (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Oklahoma City Post Airport, 11 miles from the town’s center, 110 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 Piedmont’s climate
What is the weather like in Piedmont?
A typical July afternoon reaches 94°, a January night drops to 27°, and about 6 inches of snow falls in a normal winter. Milder January nights than 68% of U.S. towns; hotter July afternoons than 94% of U.S. towns.
How cold does it get in Piedmont in winter?
January nights average 27°. About 73 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 33°.
How much snow does Piedmont get?
About 5.8 inches in a normal winter at Piedmont 3 N, OK, most of it in January.
How hot does it get in Piedmont?
July, with a typical high of 94° and a low of 71°. About 76 days a year reach 90° and 14 reach 100° (Oklahoma City Post Airport).
When is the first and last frost in Piedmont?
In half of years the last spring frost (32°) comes by April 2 and the first fall frost by November 4, about 216 frost-free days, at Oklahoma City Post Airport.
What growing zone is Piedmont in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 7°.
What is the best time of year to visit Piedmont?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Piedmont getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 84% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Piedmont.
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.