Photo: Hotboxers · CC BY-SA 3.0Less rain and snow falls on Mount Laguna than on 88% of U.S. towns: 23 inches a year
On a normal January night the air cools to about 31°. By January nights alone, it runs milder than 73% of U.S. towns. Since 1901–2000, the year has warmed by 1.8°, most of all in January. Garden planting can start around April 22; autumn frost returns near November 8.
A year in Mount Laguna at a glance
Each month’s typical high and low, and what it brings.
What stands out about Mount Laguna’s climate
Compared with towns across the U.S., with Mount Laguna’s place in California beside it.
What a year in Mount Laguna feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 197 frost-free days a year
In half of years the last 32° night comes by April 22 and the first by November 8. Frost and day counts come from NOAA’s station at Mt Laguna #3, CA, 0.4 miles from the town’s center, at about the same height.
The 2023 USDA map puts Mount Laguna’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 14°. 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 23 inches of rain a year
February is the wettest month and June the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Mount Laguna
89% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Mt Laguna #3, CA.
Living with Mount Laguna’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
197 frost-free days in zone 8a. The last frost comes by Apr 22 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 8.
Months with highs of 62–84° and lows of 40° or more: June, September and October. 6.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Mount Laguna from natural hazards, wildfire is the largest share (83%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Mount Laguna and similar climates
TownRatings has no climate map of the towns around Mount Laguna yet.
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 Mount Laguna averaged 1.8° warmer than the 1900s. The biggest change is in January (+3.3°).
A bigger shift than in 82% 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 Mount Laguna compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Mount Laguna’s place among California’s.
Mount Laguna weather by month
Highs, lows and precipitation from NOAA’s grid at Mount Laguna’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 52° | 31° | 4.5" | 36° – 47° |
| February | 52° | 30° | 5.3" | 34° – 48° |
| March | 56° | 32° | 3.5" | 37° – 51° |
| April | 60° | 34° | 1.6" | 42° – 52° |
| May | 68° | 40° | 0.6" | 47° – 61° |
| June | 78° | 46° | 0.1" | 56° – 67° |
| July | 85° | 53° | 0.6" | 63° – 72° |
| August | 85° | 53° | 0.7" | 66° – 72° |
| September | 79° | 48° | 0.5" | 60° – 67° |
| October | 69° | 40° | 0.7" | 50° – 60° |
| November | 59° | 34° | 1.8" | 39° – 52° |
| December | 52° | 30° | 3.5" | 37° – 46° |
| Year | 66° | 39° | 23.4" |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 34° to 48°. August is the most reliable, staying within 7°.
Where Mount Laguna’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 Mount Laguna’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mt Laguna #3, CA, 0.4 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 Mount Laguna’s climate
What is the weather like in Mount Laguna?
A typical July afternoon reaches 85°, a January night drops to 31°. Milder January nights than 73% of U.S. towns; cooler July afternoons than 55% of U.S. towns.
How cold does it get in Mount Laguna in winter?
February nights average 30°. About 63 nights a year reach 32° or below. In the coldest February of the last 30 years the month averaged 34°.
How hot does it get in Mount Laguna?
July, with a typical high of 85° and a low of 53°. About 4 days a year reach 90° (Mt Laguna #3, CA).
When is the first and last frost in Mount Laguna?
In half of years the last spring frost (32°) comes by April 22 and the first fall frost by November 8, about 197 frost-free days, at Mt Laguna #3, CA.
What growing zone is Mount Laguna in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 14°.
What is the best time of year to visit Mount Laguna?
By one simple rule (highs of 62–84° and lows of 40° or more), June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Mount Laguna getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 82% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Mount Laguna.
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.