Photo: Steven White (The Phase Master) · CC BY-SA 4.0Calera reaches 100° on about 11 days a year, more than 92% of U.S. towns
A typical July afternoon reaches 94°, a January night drops to 32°, and about 2 inches of snow falls in a normal winter.
A year in Calera at a glance
Each month’s typical high and low, and what it brings.
What stands out about Calera’s climate
Compared with towns across the U.S., with Calera’s place in Oklahoma beside it.
What a year in Calera feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 221 frost-free days a year
In half of years the last 32° night comes by March 31 and the first by November 5. Frost and day counts come from NOAA’s station at Durant, OK, 6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Calera’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 14°. 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 2 inches of snow a winter
Snow, measured at Durant, OK, falls mostly in January. Precipitation (rain plus melted snow) adds up to 43 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 73 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Calera
57% 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 Durant, OK.
Living with Calera’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
221 frost-free days in zone 8a. The last frost comes by Mar 31 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 5.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November.
Parks & trails →Of the yearly building losses FEMA expects in Calera from natural hazards, tornadoes are the largest share (39%); heat waves, cold waves, winter storms and ice storms together are 25%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Calera and its neighbors
Every town next door is within a degree of Calera in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Calera’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 |
|---|---|---|---|---|
| Calera, OK | 32° | 94° | 43" | 2.0" |
| Seven Oaks, SC | 34° | 93° | 45" | 1.2" |
| Milledgeville, GA | 34° | 93° | 47" | 0.6" |
| Clearlake, CA | 35° | 93° | 40" | 0.4" |
| Laurinburg, NC | 33° | 91° | 45" | 1.1" |
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 Calera averaged 0.6° warmer than the 1900s. The biggest change is in January (+1.9°).
A smaller shift than in 97% 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 Calera compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Calera’s place among Oklahoma’s.
Calera weather by month
Highs, lows and precipitation from NOAA’s grid at Calera’s center; snow, wet days and snow on the ground from Durant, OK. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 53° | 32° | 2.4" | 0.7" | 6 | 0 | 39° – 51° |
| February | 58° | 36° | 2.6" | 0.4" | 6 | 0 | 39° – 54° |
| March | 66° | 44° | 3.7" | 0.5" | 7 | 0 | 50° – 63° |
| April | 74° | 51° | 3.9" | 0.0" | 7 | 0 | 57° – 68° |
| May | 81° | 60° | 5.7" | 0.0" | 9 | 0 | 68° – 76° |
| June | 89° | 69° | 4.4" | 0.0" | 6 | 0 | 76° – 84° |
| July | 94° | 72° | 2.9" | 0.0" | 5 | 0 | 79° – 90° |
| August | 94° | 72° | 2.6" | 0.0" | 4 | 0 | 76° – 91° |
| September | 86° | 64° | 3.8" | 0.0" | 6 | 0 | 72° – 82° |
| October | 76° | 53° | 4.3" | 0.0" | 6 | 0 | 59° – 70° |
| November | 64° | 43° | 3.2" | 0.0" | 5 | 0 | 47° – 60° |
| December | 55° | 34° | 3.3" | 0.4" | 5 | 0 | 35° – 49° |
| Year | 74° | 53° | 42.8" | 2.0" | 73 | 1 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 39° to 54°. June is the most reliable, staying within 8°.
Where Calera’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 Calera’s center.
- Snow: Durant, OK.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Durant, OK, 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 Calera’s climate
What is the weather like in Calera?
A typical July afternoon reaches 94°, a January night drops to 32°, and about 2 inches of snow falls in a normal winter. Milder January nights than 75% of U.S. towns; hotter July afternoons than 93% of U.S. towns.
How cold does it get in Calera in winter?
January nights average 32°. About 70 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 39°.
How much snow does Calera get?
About 2.0 inches in a normal winter at Durant, OK, most of it in January, with snow on the ground about 1 days a year.
How hot does it get in Calera?
July, with a typical high of 94° and a low of 72°. About 82 days a year reach 90° and 11 reach 100° (Durant, OK).
When is the first and last frost in Calera?
In half of years the last spring frost (32°) comes by March 31 and the first fall frost by November 5, about 221 frost-free days, at Durant, OK.
What growing zone is Calera in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 14°.
What is the best time of year to visit Calera?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Calera getting warmer?
Yes: 1991–2020 averaged 0.6° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 97% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Calera.
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.