Photo: MARELBU · CC BY 3.0Afternoon heat in San Juan Bautista trails that of 94% of U.S. towns
In January the night’s low is typically 39°. By precipitation alone, it ranks drier than 93% of U.S. towns. Decade by decade the climate has edged up, 1.9° above 1901–2000. Long walks are most pleasant from February to November, when afternoons reach 64–81°.
A year in San Juan Bautista at a glance
Each month’s typical high and low, and what it brings.
What stands out about San Juan Bautista’s climate
Compared with towns across the U.S., with San Juan Bautista’s place in California beside it.
What a year in San Juan Bautista feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 287 frost-free days a year
In half of years the last 32° night comes by February 19 and the first by December 1. Frost and day counts come from NOAA’s station at Hollister 2, CA, 6 miles from the town’s center, at about the same height.
The 2023 USDA map puts San Juan Bautista’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 26°. 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 15 inches of rain a year
January is the wettest month and July the driest. Rain falls on about 48 days a year. Snow is rare: about 0.1" in a normal year at Hollister 2, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in San Juan Bautista
87% of the work is heating, so the furnace matters far more than the air conditioner. 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 Hollister 2, CA.
Living with San Juan Bautista’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
287 frost-free days in zone 9b. The last frost comes by Feb 19 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 1.
Months with highs of 62–84° and lows of 40° or more: February, March, April, May, June, July, August, September, October and November. 1.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in San Juan Bautista from natural hazards, earthquakes are the largest share (57%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →San Juan Bautista and similar climates
TownRatings has no climate map of the towns around San Juan Bautista yet.
Climates most like San Juan Bautista’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 |
|---|---|---|---|---|
| San Juan Bautista, CA | 39° | 79° | 15" | 0.1" |
| Makawao, HI | 53° | 75° | 23" | 0.0" |
| Sequim, WA | 34° | 71° | 18" | 1.4" |
| La Grande, OR | 25° | 84° | 18" | 9.4" |
| Indian Hills, NV | 25° | 86° | 14" | 14" |
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 San Juan Bautista averaged 1.9° warmer than the 1900s. The biggest change is in January (+2.8°).
A bigger shift than in 87% 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 San Juan Bautista compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with San Juan Bautista’s place among California’s.
San Juan Bautista weather by month
Highs, lows and precipitation from NOAA’s grid at San Juan Bautista’s center; snow, wet days and snow on the ground from Hollister 2, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 61° | 39° | 3.3" | 0.0" | 8 | 0 | 45° – 55° |
| February | 64° | 41° | 2.8" | 0.0" | 10 | 0 | 49° – 57° |
| March | 67° | 43° | 2.5" | 0.0" | 7 | 0 | 50° – 60° |
| April | 70° | 45° | 1.1" | 0.0" | 5 | 0 | 54° – 61° |
| May | 73° | 49° | 0.5" | 0.0" | 2 | 0 | 58° – 66° |
| June | 77° | 52° | 0.1" | 0.0" | 1 | 0 | 61° – 67° |
| July | 79° | 55° | 0.0" | 0.0" | 0 | 0 | 64° – 70° |
| August | 80° | 55° | 0.0" | 0.0" | 0 | 0 | 65° – 71° |
| September | 81° | 53° | 0.1" | 0.0" | 0 | 0 | 64° – 71° |
| October | 77° | 48° | 0.7" | 0.0" | 3 | 0 | 60° – 67° |
| November | 68° | 42° | 1.5" | 0.0" | 5 | 0 | 49° – 59° |
| December | 60° | 38° | 2.7" | 0.1" | 7 | 0 | 45° – 53° |
| Year | 71° | 47° | 15.2" | 0.1" | 48 | 0 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 50° to 60°. June is the most reliable, staying within 6°.
Where San Juan Bautista’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 San Juan Bautista’s center.
- Snow: Hollister 2, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Hollister 2, CA, 6 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 San Juan Bautista’s climate
What is the weather like in San Juan Bautista?
A typical July afternoon reaches 79°, a January night drops to 39°, and snow is almost unheard of. Milder January nights than 87% of U.S. towns; cooler July afternoons than 94% of U.S. towns.
How cold does it get in San Juan Bautista in winter?
December nights average 38°. About 18 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 45°.
How much snow does San Juan Bautista get?
About 0.1 inches in a normal winter at Hollister 2, CA, so most winters see none.
How hot does it get in San Juan Bautista?
July, with a typical high of 79° and a low of 55°. About 25 days a year reach 90° and 4 reach 100° (Hollister 2, CA).
When is the first and last frost in San Juan Bautista?
In half of years the last spring frost (32°) comes by February 19 and the first fall frost by December 1, about 287 frost-free days, at Hollister 2, CA.
What growing zone is San Juan Bautista in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 26°.
What is the best time of year to visit San Juan Bautista?
By one simple rule (highs of 62–84° and lows of 40° or more), February, March, April, May, June, July, August, September, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is San Juan Bautista getting warmer?
Yes: 1991–2020 averaged 1.9° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 87% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in San Juan Bautista.
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.