Sunnyside, CA climate
Sunnyside has mild winters and hot summers, with very little rain. A typical July afternoon reaches 98°, a January night drops to 39°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decade7° warmer than normal today. The forecast high is 93°, and a typical Sep 30 in Sunnyside peaks around 86°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Sunnyside feels like
Winter
Spring
Summer
Fall
Sunnyside 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 | 56° | 39° | 2.1" | 0 | 8 | 0 | 42° – 54° |
| February | 62° | 42° | 1.8" | 0 | 9 | 0 | 49° – 57° |
| March | 69° | 46° | 1.8" | 0 | 7 | 0 | 50° – 64° |
| April | 75° | 48° | 0.9" | 0 | 5 | 0 | 57° – 67° |
| May | 84° | 55° | 0.4" | 0 | 3 | 0 | 61° – 77° |
| June | 92° | 61° | 0.1" | 0 | 1 | 0 | 71° – 81° |
| July | 98° | 66° | 0.0" | 0 | 0 | 0 | 78° – 86° |
| August | 97° | 65° | 0.0" | 0 | 0 | 0 | 77° – 85° |
| September | 92° | 60° | 0.1" | 0 | 1 | 0 | 72° – 79° |
| October | 80° | 52° | 0.5" | 0 | 2 | 0 | 63° – 71° |
| November | 66° | 44° | 0.9" | 0 | 5 | 0 | 47° – 59° |
| December | 56° | 38° | 1.7" | 0 | 7 | 0 | 43° – 51° |
| Year | 77° | 51° | 10.4" | 0.0" | 47 | 0 |
“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 Sunnyside
Sunnyside gets 10 inches of rain and melted snow a year. January is the wettest month and July the driest. Rain or snow falls on about 47 days a year.
A year-round growing season
Heating and cooling a home in Sunnyside
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Sunnyside, 50% of that work is heating and 50% is cooling.
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.
Sunnyside and its neighbors
Sunnyside borders 1 town with climate data. January nights across them vary by 0.1°. Fresno has both the coldest January nights (39°) and the hottest July afternoons (98°). Sunnyside’s January low is 39° and its July high 98°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Sunnyside 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 Sunnyside averaged 2.1° warmer than the 1900s. The biggest change is in January (+2.9°). The shift is larger than in 96% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Sunnyside’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. May swings the most: between 1991 and 2020 its average temperature ranged from 61° to 77°. September is the most reliable, staying within 7°.
Common questions about Sunnyside’s climate
What is the coldest month in Sunnyside?
December, with a typical high of 56° and a low of 38°.
What is the hottest month in Sunnyside?
July, with a typical high of 98° and a low of 66°. About 113 days a year reach 90°.
How much snow does Sunnyside get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Sunnyside?
Frost is uncommon. Only 85% of years see a night at 32° or below.
What is the rainiest month in Sunnyside?
January, with 2.1 inches of rain and melted snow. The year totals 10 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Sunnyside itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Fresno Yosemite Intl Airport, CA (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.