Oneonta, NY climate
Oneonta has cold, snowy winters and pleasant summers. A typical July afternoon reaches 80°, a January night drops to 13°, and about 83 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Oneonta feels like
Winter
Spring
Summer
Fall
Oneonta weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 31° | 13° | 2.9" | 20.7" | 18 | 23 | 12° – 31° |
| February | 34° | 14° | 2.5" | 19.5" | 13 | 22 | 10° – 30° |
| March | 42° | 22° | 3.3" | 14.5" | 14 | 17 | 25° – 44° |
| April | 56° | 32° | 3.8" | 3.3" | 14 | 2 | 37° – 49° |
| May | 68° | 43° | 3.9" | 0.3" | 13 | 0 | 49° – 61° |
| June | 76° | 52° | 4.8" | 0 | 12 | 0 | 60° – 69° |
| July | 80° | 56° | 4.3" | 0 | 12 | 0 | 64° – 71° |
| August | 78° | 55° | 4.3" | 0 | 11 | 0 | 63° – 70° |
| September | 71° | 48° | 4.3" | 0 | 10 | 0 | 56° – 64° |
| October | 59° | 38° | 4.3" | 0.8" | 13 | 0 | 43° – 55° |
| November | 47° | 29° | 3.3" | 6.3" | 13 | 5 | 33° – 43° |
| December | 36° | 21° | 3.4" | 17.6" | 16 | 16 | 20° – 40° |
| Year | 56° | 35° | 45.1" | 83.0" | 158 | 86 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Oneonta
Oneonta gets 45 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 158 days a year. Snow covers the ground about 86 days of the year.
About 141 frost-free days a year
In half of years the last 32° night comes by May 17 and the first one by October 3. That leaves about 141 frost-free days for gardens, shorter than 88% of U.S. towns.
Heating and cooling a home in Oneonta
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Oneonta, 97% of that work is heating and 3% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Oneonta compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Oneonta averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.9°). The shift is smaller than in 56% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Oneonta’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 20° to 40°. August is the most reliable, staying within 7°.
Common questions about Oneonta’s climate
What is the coldest month in Oneonta?
January, with a typical high of 31° and a low of 13°.
What is the hottest month in Oneonta?
July, with a typical high of 80° and a low of 56°. About 2 days a year reach 90°.
How much snow does Oneonta get?
About 83 inches in a normal winter, most of it in January.
When is the first frost in Oneonta?
In half of years the first 32° night comes by October 3, and the last spring frost by May 17.
What is the rainiest month in Oneonta?
June, with 4.8 inches of rain and melted snow. The year totals 45 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Oneonta itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Emmons, NY (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.