Sempronius, NY climate
Sempronius has cold, snowy winters and pleasant summers. A typical July afternoon reaches 77°, a January night drops to 13°, and about 117 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Sempronius feels like
Winter
Spring
Summer
Fall
Sempronius 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 | 29° | 13° | 3.0" | 25.2" | 20 | 28 | 11° – 30° |
| February | 31° | 15° | 2.6" | 24.8" | 15 | 28 | 8° – 31° |
| March | 39° | 22° | 3.2" | 25.4" | 17 | 26 | 22° – 43° |
| April | 53° | 32° | 3.7" | 7.5" | 16 | 9 | 36° – 48° |
| May | 65° | 44° | 3.8" | 0.5" | 16 | 0 | 49° – 60° |
| June | 73° | 53° | 4.6" | 0 | 14 | 0 | 60° – 68° |
| July | 77° | 58° | 4.3" | 0 | 14 | 0 | 63° – 71° |
| August | 76° | 57° | 4.1" | 0 | 14 | 0 | 63° – 70° |
| September | 69° | 49° | 4.3" | 0 | 15 | 0 | 57° – 64° |
| October | 57° | 40° | 4.3" | 1.6" | 17 | 1 | 43° – 54° |
| November | 45° | 30° | 3.5" | 11.2" | 17 | 10 | 32° – 43° |
| December | 34° | 20° | 3.6" | 21.1" | 19 | 23 | 19° – 38° |
| Year | 54° | 36° | 45.0" | 117.3" | 192 | 124 |
“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 Sempronius
Sempronius 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 192 days a year. Snow covers the ground about 124 days of the year.
About 147 frost-free days a year
In half of years the last 32° night comes by May 12 and the first one by October 5. That leaves about 147 frost-free days for gardens, shorter than 83% of U.S. towns.
Heating and cooling a home in Sempronius
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Sempronius, 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.
Sempronius and its neighbors
Sempronius borders 5 towns with climate data. January nights across them vary by 1.7°. Scott has the coldest January nights (13°) and Moravia the hottest July afternoons (79°). Sempronius’s January low is 13° and its July high 77°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Sempronius 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 Sempronius averaged 1.1° warmer than the 1900s. The biggest change is in February (+2.7°). The shift is smaller than in 60% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Sempronius’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 8° to 31°. August is the most reliable, staying within 7°.
Common questions about Sempronius’s climate
What is the coldest month in Sempronius?
January, with a typical high of 29° and a low of 13°.
What is the hottest month in Sempronius?
July, with a typical high of 77° and a low of 58°.
How much snow does Sempronius get?
About 117 inches in a normal winter, most of it in March.
When is the first frost in Sempronius?
In half of years the first 32° night comes by October 5, and the last spring frost by May 12.
What is the rainiest month in Sempronius?
June, with 4.6 inches of rain and melted snow. The year totals 45 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Sempronius itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Tully Heiberg Forest, NY (13 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.