Dobbins, California climate: Normal weather by month, frost dates and records
Dobbins's normal year runs from 34°F December nights to 94°F July afternoons, with 46.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.8°C, December lows of 1°C, July highs of 34°C, 1,177 mm of precipitation a year.
- NOAA stationDobbins (1 mi S)
- Station IDUSC00042456
- Location39.36°N 121.20°W
- Elevation1,640 ft (500 m)
- From the centerunder 1 mile
- Population (census place)511
On October 23, the normal high in Dobbins is 75°F and the normal low 43°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 Dobbins.
- Jan 57° 34°
- Feb 59° 35°
- Mar 64° 38°
- Apr 68° 40°
- May 76° 47°
- Jun 86° 52°
- Jul 94° 57°
- Aug 94° 55°
- Sep 89° 51°
- Oct 78° 45°
- Nov 64° 38°
- Dec 56° 34°
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 Dobbins each month?
July is the warmest month, with normal highs of 94°F; December the coldest, with normal lows of 34°F. The most precipitation falls in December (8.86 in), the least in July (0.01 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 57°F | 34°F | 45.4°F | 7.71 | 12 | <1 | 15 | 9 h 40 min |
| February | 59°F | 35°F | 47.0°F | 7.18 | 11 | <1 | 9 | 10 h 40 min |
| March | 64°F | 38°F | 50.7°F | 7.82 | 10 | <1 | 7 | 11 h 50 min |
| April | 68°F | 40°F | 54.3°F | 3.22 | 7 | <1 | 3 | 13 h 10 min |
| May | 76°F | 47°F | 61.3°F | 2.38 | 6 | 3 | <1 | 14 h 20 min |
| June | 86°F | 52°F | 68.9°F | 0.73 | 2 | 11 | <1 | 15 h |
| July | 94°F | 57°F | 75.4°F | 0.01 | <1 | 25 | <1 | 14 h 40 min |
| August | 94°F | 55°F | 74.5°F | 0.11 | 1 | 24 | <1 | 13 h 50 min |
| September | 89°F | 51°F | 70.2°F | 0.38 | 1 | 15 | <1 | 12 h 30 min |
| October | 78°F | 45°F | 61.3°F | 2.65 | 3 | 2 | <1 | 11 h 10 min |
| November | 64°F | 38°F | 50.9°F | 5.28 | 9 | <1 | 7 | 10 h |
| December | 56°F | 34°F | 44.8°F | 8.86 | 10 | <1 | 17 | 9 h 30 min |
| Year (annual) | 74°F | 44°F | 58.7°F | 46.33 | 70 | 79 | 58 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 14°C | 1°C | 7.4°C | 196 mm |
| February | 15°C | 2°C | 8.3°C | 182 mm |
| March | 18°C | 3°C | 10.4°C | 199 mm |
| April | 20°C | 5°C | 12.4°C | 82 mm |
| May | 24°C | 8°C | 16.3°C | 60 mm |
| June | 30°C | 11°C | 20.5°C | 19 mm |
| July | 34°C | 14°C | 24.1°C | 0 mm |
| August | 34°C | 13°C | 23.6°C | 3 mm |
| September | 32°C | 11°C | 21.2°C | 10 mm |
| October | 26°C | 7°C | 16.3°C | 67 mm |
| November | 18°C | 3°C | 10.5°C | 134 mm |
| December | 13°C | 1°C | 7.1°C | 225 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Grass Valley (13 miles away), gets 9 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00042456; 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 Dobbins?
Normal highs sit between 65°F and 85°F in April, May and October. Of those, October 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 USC00042456.
When is the last frost in Dobbins?
In Dobbins, the last spring frost (32°F) comes after April 1 in half of years and after April 22 in one year in ten; the first autumn frost comes before November 17 in half of years and before October 31 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
- April 11 year in 10 after April 22; 9 in 10 after March 4
- First autumn frost, half of years before
- November 171 year in 10 before October 31; 9 in 10 before December 5
NOAA puts the median frost-free season at 229 days, and the season without a hard freeze (28°F) at 281 days.
A hard freeze (28°F) comes after February 27 in half of springs and before December 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Dobbins in zone 9a in ZIP code 95935.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00042456; 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 Dobbins?
In a normal year in Dobbins, 79 days a year reach 90°F (11 of them 100°F or more), 58 nights fall to 32°F or colder and 70 days bring measurable precipitation.
- Days at 90°F or more
- 79a normal year
- Days at 100°F or more
- 11a normal year
- Nights at 32°F or colder
- 58a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 70a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00042456.
How sunny is Dobbins?
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Dobbins, 5.1 kWh per square metre a day. July is the sunniest month (98%) and December the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.1 |
| February | 74% | 3.1 |
| March | 76% | 4.3 |
| April | 81% | 5.9 |
| May | 88% | 7.3 |
| June | 94% | 8.3 |
| July | 98% | 8.3 |
| August | 97% | 7.4 |
| September | 95% | 5.9 |
| October | 89% | 4.1 |
| November | 78% | 2.6 |
| December | 69% | 1.9 |
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 Dobbins need?
A normal year in Dobbins brings 3,283 heating degree days, 39% fewer than the median U.S. place (5,373), and 1,015 cooling degree days, 12% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,806 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 609 | 0 |
| February | 503 | 0 |
| March | 445 | 0 |
| April | 322 | 2 |
| May | 157 | 42 |
| June | 28 | 145 |
| July | 1 | 322 |
| August | 1 | 295 |
| September | 18 | 174 |
| October | 148 | 35 |
| November | 425 | 0 |
| December | 626 | 0 |
| Year (annual) | 3,283 | 1,015 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00042456. 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 Dobbins's climate compare?
Dobbins is warmer than 72 of the other 218 places with their own NOAA record in California, and wetter than 197. Across the 7,247 U.S. stations with normals, its annual mean of 58.7°F is warmer than 71%.
In the Köppen classification computed from these normals, Dobbins is Csa: temperate, dry-summer, hot 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 Dobbins share this climate record?
7 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.
- Loma Rica, CA2,371 people · 11 mi W
- Challenge-Brownsville, CA792 people · 8 mi NW
- Bangor, CA459 people · 11 mi W
- Smartsville, CA198 people · 12 mi SW
- North San Juan, CA111 people · 5 mi E
- Rackerby, CA106 people · 9 mi NW
- Robinson Mill, CA78 people · 11 mi NW
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 Dobbins's climate
What is the coldest month in Dobbins?
December, with a normal high of 56°F and a normal low of 34°F. The warmest is July (94°F by day, 57°F at night).
Does it snow in Dobbins?
Yes. NOAA publishes no 1991-2020 snowfall normal for Dobbins's NOAA station; the nearest record that keeps one, Grass Valley (13 miles away), records 9 inches of snow in a normal year.
What is the rainiest month in Dobbins?
December, with 8.86 in of precipitation in a normal year; the driest is July with 0.01 in.
What plant hardiness zone is Dobbins in?
The USDA's 2023 map puts Dobbins in zone 9a in ZIP code 95935.
How late can frost come in Dobbins?
In half of years the last 32°F night comes after April 1; in one year in ten it comes after April 22. Waiting until April 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Grass Valley, CA13 miles from this station, 56.1°F a year
- Nevada City, CA13 miles from this station, 56.2°F a year
- Strawberry Valley, CA15 miles from this station, 52.6°F a year
- Colfax, CA23 miles from this station, 59.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made