Photo: Justin Cozart from Dallas, TX, USA · CC BY 2.0Bartlesville reaches 100° on about 11 days a year, more than 91% of U.S. towns
The coldest hours of a January night bottom out at 25° on average. May is the wettest month here, with about 4.2 times the rain of January. Winters are mild: January nights here are milder than in 61% of U.S. towns. Keep the boiler serviced for the months from November to March, which average under 50°.
A year in Bartlesville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Bartlesville’s climate
Compared with towns across the U.S., with Bartlesville’s place in Oklahoma beside it.
What a year in Bartlesville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 192 frost-free days a year
In half of years the last 32° night comes by April 12 and the first by October 21. Frost and day counts come from NOAA’s station at Bartlesville F P Fld, OK, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Bartlesville’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 2°. 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 8 inches of snow a winter
Snow, measured at Bartlesville F P Fld, OK, falls mostly in December. Precipitation (rain plus melted snow) adds up to 41 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 95 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Bartlesville
71% 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 Bartlesville F P Fld, OK.
Living with Bartlesville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
192 frost-free days in zone 7a. The last frost comes by Apr 12 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 21.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 17 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Bartlesville from natural hazards, river flooding is the largest share (45%); heat waves, cold waves, winter storms and ice storms together are 24%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Bartlesville and similar climates
TownRatings has no climate map of the towns around Bartlesville yet.
Climates most like Bartlesville’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 |
|---|---|---|---|---|
| Bartlesville, OK | 25° | 92° | 41" | 8.2" |
| Pevely, MO | 23° | 89° | 43" | 9.2" |
| Columbia, IL | 24° | 89° | 42" | 8.8" |
| Fredericksburg, VA | 25° | 89° | 43" | 11" |
| Mountain Home, AR | 26° | 90° | 48" | 7.8" |
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 Bartlesville averaged 0.6° warmer than the 1900s. The biggest change is in March (+1.9°).
A smaller shift than in 96% 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 Bartlesville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Bartlesville’s place among Oklahoma’s.
Bartlesville weather by month
Highs, lows and precipitation from NOAA’s grid at Bartlesville’s center; snow, wet days and snow on the ground from Bartlesville F P Fld, OK. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 47° | 25° | 1.5" | 1.9" | 6 | 1 | 31° – 45° |
| February | 52° | 29° | 1.8" | 1.6" | 6 | 1 | 34° – 48° |
| March | 61° | 38° | 3.0" | 1.5" | 9 | 0 | 43° – 60° |
| April | 71° | 47° | 4.4" | 0.0" | 9 | 0 | 53° – 65° |
| May | 78° | 57° | 6.3" | 0.0" | 11 | 0 | 64° – 74° |
| June | 87° | 66° | 5.3" | 0.0" | 9 | 0 | 72° – 81° |
| July | 92° | 71° | 3.6" | 0.0" | 8 | 0 | 76° – 88° |
| August | 92° | 69° | 3.6" | 0.0" | 8 | 0 | 74° – 85° |
| September | 84° | 60° | 3.7" | 0.0" | 8 | 0 | 68° – 79° |
| October | 73° | 48° | 3.6" | 0.0" | 8 | 0 | 54° – 66° |
| November | 60° | 37° | 2.4" | 0.2" | 7 | 0 | 42° – 56° |
| December | 49° | 28° | 2.0" | 3.0" | 6 | 2 | 26° – 43° |
| Year | 70° | 48° | 41.3" | 8.2" | 95 | 4 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 26° to 43°. June is the most reliable, staying within 9°.
Where Bartlesville’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 Bartlesville’s center.
- Snow: Bartlesville F P Fld, OK.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Bartlesville F P Fld, OK, 5 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 Bartlesville’s climate
What is the weather like in Bartlesville?
A typical July afternoon reaches 92°, a January night drops to 25°, and about 8 inches of snow falls in a normal winter. Milder January nights than 61% of U.S. towns; hotter July afternoons than 88% of U.S. towns.
How cold does it get in Bartlesville in winter?
January nights average 25°. About 97 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 31°.
How much snow does Bartlesville get?
About 8.2 inches in a normal winter at Bartlesville F P Fld, OK, most of it in December, with snow on the ground about 4 days a year.
How hot does it get in Bartlesville?
July, with a typical high of 92° and a low of 71°. About 71 days a year reach 90° and 11 reach 100° (Bartlesville F P Fld, OK).
When is the first and last frost in Bartlesville?
In half of years the last spring frost (32°) comes by April 12 and the first fall frost by October 21, about 192 frost-free days, at Bartlesville F P Fld, OK.
What growing zone is Bartlesville in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 2°.
What is the best time of year to visit Bartlesville?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Bartlesville getting warmer?
Yes: 1991–2020 averaged 0.6° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 96% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Bartlesville.
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.