Mill Creek reaches 100° on about 13 days a year, more than 92% of U.S. towns
Midwinter brings lows of about 30°. Winter and summer sit 63° apart. Its January nights stay gentler than in 73% of U.S. towns. The frost-free window for a garden runs roughly April 4 to October 31.
A year in Mill Creek at a glance
Each month’s typical high and low, and what it brings.
What stands out about Mill Creek’s climate
Compared with towns across the U.S., with Mill Creek’s place in Oklahoma beside it.
What a year in Mill Creek feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 208 frost-free days a year
In half of years the last 32° night comes by April 4 and the first by October 31. Frost and day counts come from NOAA’s station at Chickasaw Nra, OK, 11 miles from the town’s center, at about the same height.
The 2023 USDA map puts Mill Creek’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 9°. 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 Chickasaw Nra, OK, falls mostly in January. Precipitation (rain plus melted snow) adds up to 42 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 81 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Mill Creek
62% 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 Chickasaw Nra, OK.
Living with Mill Creek’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
208 frost-free days in zone 7b. The last frost comes by Apr 4 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 31.
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 Mill Creek from natural hazards, drought is the largest share (32%); heat waves, cold waves, winter storms and ice storms together are 18%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Mill Creek and similar climates
TownRatings has no climate map of the towns around Mill Creek yet.
Climates most like Mill Creek’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 |
|---|---|---|---|---|
| Mill Creek, OK | 30° | 93° | 42" | 1.7" |
| Seven Oaks, SC | 34° | 93° | 45" | 1.2" |
| Laurinburg, NC | 33° | 91° | 45" | 1.1" |
| Clearlake, CA | 35° | 93° | 40" | 0.4" |
| Milledgeville, GA | 34° | 93° | 47" | 0.6" |
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 Mill Creek averaged 0.3° warmer than the 1900s. The biggest change is in March (+1.4°).
A smaller shift than in all but 65 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 Mill Creek compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Mill Creek’s place among Oklahoma’s.
Mill Creek weather by month
Highs, lows and precipitation from NOAA’s grid at Mill Creek’s center; snow, wet days and snow on the ground from Chickasaw Nra, OK. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 52° | 30° | 2.2" | 1.0" | 6 | 1 | 37° – 49° |
| February | 57° | 34° | 2.3" | 0.3" | 6 | 0 | 38° – 54° |
| March | 65° | 42° | 3.4" | 0.1" | 8 | 0 | 48° – 61° |
| April | 73° | 50° | 3.8" | 0.0" | 7 | 0 | 56° – 68° |
| May | 80° | 59° | 5.8" | 0.0" | 9 | 0 | 67° – 75° |
| June | 88° | 68° | 4.5" | 0.0" | 7 | 0 | 74° – 84° |
| July | 93° | 71° | 3.0" | 0.0" | 6 | 0 | 78° – 90° |
| August | 94° | 71° | 3.0" | 0.0" | 6 | 0 | 76° – 91° |
| September | 85° | 63° | 4.3" | 0.0" | 7 | 0 | 70° – 81° |
| October | 75° | 52° | 4.3" | 0.0" | 7 | 0 | 57° – 69° |
| November | 63° | 41° | 2.7" | 0.0" | 6 | 0 | 46° – 59° |
| December | 54° | 32° | 2.9" | 0.3" | 6 | 0 | 34° – 47° |
| Year | 73° | 51° | 42.2" | 1.7" | 81 | 1 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 38° to 54°. May is the most reliable, staying within 8°.
Where Mill Creek’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 Mill Creek’s center.
- Snow: Chickasaw Nra, OK.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Chickasaw Nra, OK, 11 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 Mill Creek’s climate
What is the weather like in Mill Creek?
A typical July afternoon reaches 93°, a January night drops to 30°, and about 2 inches of snow falls in a normal winter. Milder January nights than 73% of U.S. towns; hotter July afternoons than 92% of U.S. towns.
How cold does it get in Mill Creek in winter?
January nights average 30°. About 76 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 37°.
How much snow does Mill Creek get?
About 1.7 inches in a normal winter at Chickasaw Nra, OK, most of it in January, with snow on the ground about 1 days a year.
How hot does it get in Mill Creek?
July, with a typical high of 93° and a low of 71°. About 73 days a year reach 90° and 13 reach 100° (Chickasaw Nra, OK).
When is the first and last frost in Mill Creek?
In half of years the last spring frost (32°) comes by April 4 and the first fall frost by October 31, about 208 frost-free days, at Chickasaw Nra, OK.
What growing zone is Mill Creek in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 9°.
What is the best time of year to visit Mill Creek?
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 Mill Creek getting warmer?
Yes: 1991–2020 averaged 0.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than all but 65 U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Mill Creek.
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.