Few U.S. towns have cooler summers than Twin Lakes
Deep winter brings January lows near 18°. By precipitation alone, it ranks drier than 88% of U.S. towns. Decade by decade the climate has edged up, 1.1° above 1901–2000. Keep the boiler serviced for the months from October to May, which average under 50°.
A year in Twin Lakes at a glance
Each month’s typical high and low, and what it brings.
What stands out about Twin Lakes’ climate
Compared with towns across the U.S., with Twin Lakes’ place in California beside it.
What a year in Twin Lakes feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
A freeze is possible in every month
About 243 nights a year fall to 32° or below, and 18 to 0° or below. Frost and day counts come from Bridgeport, CA, 9 miles away.
The 2023 USDA map puts Twin Lakes’ center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −8°. 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
January is the wettest month and August the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Twin Lakes
99% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from September through June.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Bridgeport, CA.
Living with Twin Lakes’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 6a, and frost can come in any month. The longest frost-free stretch in half of years is about 69 days.
Months with highs of 62–84° and lows of 40° or more: July and August. 16 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Twin Lakes from natural hazards, river flooding is the largest share (38%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Twin Lakes and similar climates
TownRatings has no climate map of the towns around Twin Lakes 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 Twin Lakes averaged 1.1° warmer than the 1900s. The biggest change is in January (+2.4°).
A smaller shift than in 69% 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 Twin Lakes compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Twin Lakes’ place among California’s.
Twin Lakes weather by month
Highs, lows and precipitation from NOAA’s grid at Twin Lakes’ center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 40° | 18° | 4.0" | 23° – 36° |
| February | 40° | 17° | 3.5" | 21° – 37° |
| March | 45° | 20° | 3.3" | 26° – 39° |
| April | 49° | 24° | 1.9" | 31° – 43° |
| May | 57° | 32° | 1.4" | 37° – 51° |
| June | 67° | 39° | 0.6" | 46° – 56° |
| July | 75° | 46° | 0.6" | 56° – 64° |
| August | 74° | 44° | 0.5" | 55° – 62° |
| September | 67° | 39° | 0.5" | 49° – 57° |
| October | 57° | 31° | 1.3" | 40° – 50° |
| November | 47° | 24° | 2.0" | 25° – 42° |
| December | 39° | 18° | 3.7" | 23° – 35° |
| Year | 55° | 29° | 23.2" |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 25° to 42°. August is the most reliable, staying within 7°.
Where Twin Lakes’ 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 Twin Lakes’ center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Bridgeport, CA, 9 miles from the town’s center, 770 ft lower; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- 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 Twin Lakes’ climate
What is the weather like in Twin Lakes?
A typical July afternoon reaches 75°, a January night drops to 18°. Colder January nights than 70% of U.S. towns; cooler July afternoons than 98% of U.S. towns.
How cold does it get in Twin Lakes in winter?
February nights average 17°. About 243 nights a year reach 32° or below and 18 reach 0° or below. In the coldest February of the last 30 years the month averaged 21°.
How hot does it get in Twin Lakes?
July, with a typical high of 75° and a low of 46°. About 8 days a year reach 90° (Bridgeport, CA).
When is the first and last frost in Twin Lakes?
There is no reliable frost-free season: at Bridgeport, CA, every month has nights at 32° or below, about 243 a year. In half of years the longest stretch without a freeze is about 69 days.
What growing zone is Twin Lakes in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −8°.
What is the best time of year to visit Twin Lakes?
By one simple rule (highs of 62–84° and lows of 40° or more), July and August. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Twin Lakes getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 69% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Twin Lakes.
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.