North San Ysidro, NM climate
North San Ysidro has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 86°, a January night drops to 18°, and about 26 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in North San Ysidro feels like
Winter
Spring
Summer
Fall
North San Ysidro 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 46° | 18° | 0.7" | 6.3" | 4 | 27° – 38° |
| February | 50° | 21° | 0.6" | 4.4" | 4 | 30° – 41° |
| March | 58° | 26° | 0.8" | 3.0" | 4 | 37° – 47° |
| April | 64° | 31° | 0.7" | 1.0" | 4 | 43° – 53° |
| May | 74° | 40° | 1.1" | 0 | 4 | 52° – 63° |
| June | 84° | 49° | 1.3" | 0 | 5 | 62° – 71° |
| July | 86° | 54° | 3.1" | 0 | 13 | 66° – 73° |
| August | 83° | 53° | 2.9" | 0 | 12 | 65° – 72° |
| September | 78° | 45° | 2.3" | 0 | 7 | 56° – 65° |
| October | 67° | 34° | 1.5" | 0.6" | 5 | 47° – 56° |
| November | 55° | 24° | 0.8" | 3.7" | 4 | 32° – 46° |
| December | 46° | 18° | 0.9" | 7.3" | 4 | 27° – 36° |
| Year | 66° | 34° | 16.8" | 26.3" | 69 |
“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 North San Ysidro
North San Ysidro gets 17 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 69 days a year.
About 138 frost-free days a year
In half of years the last 32° night comes by May 15 and the first one by October 3. That leaves about 138 frost-free days for gardens, shorter than 90% of U.S. towns.
Heating and cooling a home in North San Ysidro
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In North San Ysidro, 94% of that work is heating and 6% 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 North San Ysidro 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 North San Ysidro averaged 1.5° warmer than the 1900s. The biggest change is in March (+2.8°). The shift is larger than in 68% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at North San Ysidro’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. November swings the most: between 1991 and 2020 its average temperature ranged from 32° to 46°. August is the most reliable, staying within 7°.
Common questions about North San Ysidro’s climate
What is the coldest month in North San Ysidro?
December, with a typical high of 46° and a low of 18°.
What is the hottest month in North San Ysidro?
July, with a typical high of 86° and a low of 54°. About 21 days a year reach 90°.
How much snow does North San Ysidro get?
About 26 inches in a normal winter, most of it in December.
When is the first frost in North San Ysidro?
In half of years the first 32° night comes by October 3, and the last spring frost by May 15.
What is the rainiest month in North San Ysidro?
July, with 3.1 inches of rain and melted snow. The year totals 17 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for North San Ysidro itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Pecos Nm, NM (9 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.