Adin, California climate: Normal weather by month, frost dates and records
Adin's normal year runs from 23°F December nights to 89°F July afternoons, with 15.0 inches of precipitation and 45 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.3°C, December lows of −5°C, July highs of 32°C, 381 mm of precipitation a year.
- NOAA stationAdin Ranger Station
- Station IDUSC00040029
- Location41.19°N 120.94°W
- Elevation4,195 ft (1,279 m)
- Population (census place)91
On October 14, the normal high in Adin is 70°F and the normal low 35°F, and the chance of measurable rain or snow is 15%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Adin.
- Jan 47° 25°
- Feb 50° 26°
- Mar 56° 29°
- Apr 62° 32°
- May 71° 39°
- Jun 79° 44°
- Jul 89° 51°
- Aug 88° 49°
- Sep 83° 43°
- Oct 69° 35°
- Nov 55° 28°
- Dec 45° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Adin each month?
July is the warmest month, with normal highs of 89°F; December the coldest, with normal lows of 23°F. The most precipitation falls in December (2.24 in), the least in August (0.19 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 47°F | 25°F | 35.7°F | 1.91 | 9.3 | 11 | <1 | 27 | 9 h 30 min |
| February | 50°F | 26°F | 38.1°F | 1.55 | 8.1 | 9 | <1 | 23 | 10 h 40 min |
| March | 56°F | 29°F | 42.2°F | 1.74 | 7.1 | 11 | <1 | 22 | 11 h 50 min |
| April | 62°F | 32°F | 47.0°F | 1.60 | 3.9 | 9 | <1 | 14 | 13 h 20 min |
| May | 71°F | 39°F | 54.8°F | 1.74 | 0.8 | 8 | 1 | 5 | 14 h 30 min |
| June | 79°F | 44°F | 61.5°F | 0.76 | 0.0 | 4 | 1 | 1 | 15 h 10 min |
| July | 89°F | 51°F | 69.7°F | 0.24 | 0.0 | 2 | 11 | <1 | 14 h 50 min |
| August | 88°F | 49°F | 68.4°F | 0.19 | 0.0 | 2 | 8 | <1 | 13 h 50 min |
| September | 83°F | 43°F | 62.7°F | 0.36 | 0.0 | 3 | 4 | 2 | 12 h 30 min |
| October | 69°F | 35°F | 51.7°F | 1.02 | 0.4 | 5 | <1 | 11 | 11 h 10 min |
| November | 55°F | 28°F | 41.2°F | 1.65 | 5.2 | 9 | <1 | 21 | 10 h |
| December | 45°F | 23°F | 34.2°F | 2.24 | 10.3 | 11 | <1 | 27 | 9 h 10 min |
| Year (annual) | 66°F | 35°F | 50.6°F | 15.00 | 45.1 | 82 | 25 | 152 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 8°C | −4°C | 2.1°C | 49 mm | 24 cm |
| February | 10°C | −3°C | 3.4°C | 39 mm | 21 cm |
| March | 13°C | −2°C | 5.7°C | 44 mm | 18 cm |
| April | 17°C | 0°C | 8.3°C | 41 mm | 10 cm |
| May | 22°C | 4°C | 12.7°C | 44 mm | 2 cm |
| June | 26°C | 6°C | 16.4°C | 19 mm | 0 cm |
| July | 32°C | 10°C | 20.9°C | 6 mm | 0 cm |
| August | 31°C | 9°C | 20.2°C | 5 mm | 0 cm |
| September | 28°C | 6°C | 17.1°C | 9 mm | 0 cm |
| October | 20°C | 2°C | 10.9°C | 26 mm | 1 cm |
| November | 13°C | −2°C | 5.1°C | 42 mm | 13 cm |
| December | 7°C | −5°C | 1.2°C | 57 mm | 26 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00040029; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Adin?
Normal highs sit between 65°F and 85°F in May, June, September and October. Of those, September has the fewest days with rain (3).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00040029.
When is the last frost in Adin?
In Adin, the last spring frost (32°F) comes after May 28 in half of years and after June 16 in one year in ten; the first autumn frost comes before September 29 in half of years and before September 10 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 281 year in 10 after June 16; 9 in 10 after May 7
- First autumn frost, half of years before
- September 291 year in 10 before September 10; 9 in 10 before October 15
NOAA puts the median frost-free season at 125 days, and the season without a hard freeze (28°F) at 162 days.
A hard freeze (28°F) comes after May 2 in half of springs and before October 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Adin in zone 7a in ZIP code 96006, the nearest ZIP area.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00040029; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Adin?
In a normal year in Adin, 25 days a year reach 90°F (1 of them 100°F or more), 152 nights fall to 32°F or colder and 82 days bring measurable precipitation.
- Days at 90°F or more
- 25a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 152a normal year
- Days that stay below freezing
- 6high of 32°F or less
- Days with 0.01 inch of precipitation
- 82a normal year
- Days with 1 inch of snow or more
- 15a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00040029.
How sunny is Adin?
Over a year 82% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Adin, 4.8 kWh per square metre a day. July is the sunniest month (93%) and December the cloudiest (64%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.0 |
| February | 71% | 3.0 |
| March | 70% | 4.1 |
| April | 74% | 5.5 |
| May | 80% | 6.8 |
| June | 88% | 7.9 |
| July | 93% | 8.0 |
| August | 93% | 7.1 |
| September | 90% | 5.6 |
| October | 83% | 3.8 |
| November | 71% | 2.3 |
| December | 64% | 1.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Adin need?
A normal year in Adin brings 5,613 heating degree days, 4% more than the median U.S. place (5,373), and 386 cooling degree days, 57% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,289 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 907 | 0 |
| February | 753 | 0 |
| March | 707 | 0 |
| April | 540 | 0 |
| May | 323 | 8 |
| June | 139 | 34 |
| July | 20 | 165 |
| August | 25 | 130 |
| September | 117 | 46 |
| October | 413 | 2 |
| November | 716 | 0 |
| December | 955 | 0 |
| Year (annual) | 5,613 | 386 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00040029. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Adin's climate compare?
Adin is warmer than 23 of the other 218 places with their own NOAA record in California, and wetter than 103. Across the 7,247 U.S. stations with normals, its annual mean of 50.6°F is warmer than 43%.
In the Köppen classification computed from these normals, Adin is Csb: temperate, dry-summer, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Adin share this climate record?
3 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Bieber, CA308 people · 10 mi SW
- Nubieber, CA69 people · 14 mi SW
- Lookout, CA43 people · 11 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Adin's climate
What is the coldest month in Adin?
December, with a normal high of 45°F and a normal low of 23°F. The warmest is July (89°F by day, 51°F at night).
Does it snow in Adin?
Yes: 45 inches in a normal year, falling on 24 days with 0.1 inch or more, the most in December (10.3 inches).
What is the rainiest month in Adin?
December, with 2.24 in of precipitation in a normal year; the driest is August with 0.19 in.
What plant hardiness zone is Adin in?
The USDA's 2023 map puts Adin in zone 7a in ZIP code 96006, the nearest ZIP area.
How late can frost come in Adin?
In half of years the last 32°F night comes after May 28; in one year in ten it comes after June 16. Waiting until June 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Canby, CA16 miles from this station, 47.7°F a year
- Alturas, CA29 miles from this station, 47.6°F a year
- Jess Valley, CA34 miles from this station, 46.1°F a year
- Hat Creek, CA36 miles from this station, 50.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made