Marysville, California climate: Normal weather by month, frost dates and records
Marysville's normal year runs from 38°F December nights to 96°F July afternoons, with 20.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.7°C, December lows of 3°C, July highs of 36°C, 510 mm of precipitation a year.
- NOAA stationMarysville Yuba County Airport
- Station IDUSW00093205
- Location39.10°N 121.57°W
- Elevation62 ft (19 m)
- Population12,714
On October 22, the normal high in Marysville is 77°F and the normal low 48°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 Marysville.
- Jan 56° 38°
- Feb 60° 41°
- Mar 66° 43°
- Apr 73° 46°
- May 82° 52°
- Jun 90° 58°
- Jul 96° 61°
- Aug 95° 60°
- Sep 90° 56°
- Oct 79° 49°
- Nov 64° 41°
- Dec 55° 38°
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 Marysville each month?
July is the warmest month, with normal highs of 96°F; December the coldest, with normal lows of 38°F. The most precipitation falls in January (3.81 in), the least in July (0.00 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 56°F | 38°F | 46.8°F | 3.81 | 10 | <1 | 8 | 9 h 40 min |
| February | 60°F | 41°F | 50.8°F | 3.65 | 9 | <1 | 3 | 10 h 40 min |
| March | 66°F | 43°F | 54.8°F | 2.92 | 9 | <1 | <1 | 11 h 50 min |
| April | 73°F | 46°F | 59.5°F | 1.40 | 7 | 1 | <1 | 13 h 10 min |
| May | 82°F | 52°F | 67.1°F | 0.93 | 4 | 7 | <1 | 14 h 20 min |
| June | 90°F | 58°F | 74.0°F | 0.28 | 1 | 18 | <1 | 14 h 50 min |
| July | 96°F | 61°F | 78.5°F | 0.00 | <1 | 28 | <1 | 14 h 40 min |
| August | 95°F | 60°F | 77.0°F | 0.05 | <1 | 26 | <1 | 13 h 40 min |
| September | 90°F | 56°F | 72.7°F | 0.11 | 1 | 17 | <1 | 12 h 30 min |
| October | 79°F | 49°F | 64.2°F | 1.03 | 4 | 3 | <1 | 11 h 10 min |
| November | 64°F | 41°F | 52.7°F | 2.21 | 7 | <1 | 3 | 10 h |
| December | 55°F | 38°F | 46.6°F | 3.68 | 11 | <1 | 9 | 9 h 30 min |
| Year (annual) | 76°F | 49°F | 62.0°F | 20.07 | 63 | 99 | 23 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 13°C | 3°C | 8.2°C | 97 mm |
| February | 16°C | 5°C | 10.4°C | 93 mm |
| March | 19°C | 6°C | 12.7°C | 74 mm |
| April | 23°C | 8°C | 15.3°C | 36 mm |
| May | 28°C | 11°C | 19.5°C | 24 mm |
| June | 32°C | 14°C | 23.3°C | 7 mm |
| July | 36°C | 16°C | 25.8°C | 0 mm |
| August | 35°C | 15°C | 25.0°C | 1 mm |
| September | 32°C | 13°C | 22.6°C | 3 mm |
| October | 26°C | 10°C | 17.9°C | 26 mm |
| November | 18°C | 5°C | 11.5°C | 56 mm |
| December | 13°C | 3°C | 8.1°C | 93 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093205; 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 Marysville?
Normal highs sit between 65°F and 85°F in March, April, May and October. Of those, May has the fewest days with rain (4).
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 USW00093205.
When is the last frost in Marysville?
In Marysville, the last spring frost (32°F) comes after February 11 in half of years and after March 12 in one year in ten; the first autumn frost comes before November 30 in half of years and before November 12 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
- February 111 year in 10 after March 12; 9 in 10 after January 6
- First autumn frost, half of years before
- November 301 year in 10 before November 12; 9 in 10 before December 21
NOAA puts the median frost-free season at 289 days, and the season without a hard freeze (28°F) at 337 days.
A hard freeze (28°F) comes after January 12 in half of springs and before December 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Marysville in zone 9b in ZIP code 95901, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Marysville's NOAA station is in zone 9a: the coldest night of a typical year reaches 25°F (20 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00093205; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 Marysville?
In a normal year in Marysville, 99 days a year reach 90°F (23 of them 100°F or more), 23 nights fall to 32°F or colder and 63 days bring measurable precipitation.
- Days at 90°F or more
- 99a normal year
- Days at 100°F or more
- 23a normal year
- Nights at 32°F or colder
- 23a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 63a normal year
The highest temperature in this station's record (since 2000) is 115°F, on September 6, 2022; the lowest is 19°F, on January 17, 2012.
The wettest calendar year on that record is 2019, with 28.98 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00093205; records: ACIS (NOAA Regional Climate Centers), station USW00093205. Records use complete months only; a month missing more than three days is left out.
How sunny is Marysville?
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Marysville, 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 Marysville need?
A normal year in Marysville brings 2,551 heating degree days, 53% fewer than the median U.S. place (5,373), and 1,499 cooling degree days, 65% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,773 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 563 | 0 |
| February | 399 | 0 |
| March | 317 | 1 |
| April | 184 | 19 |
| May | 49 | 116 |
| June | 7 | 277 |
| July | 0 | 417 |
| August | 0 | 372 |
| September | 6 | 235 |
| October | 86 | 62 |
| November | 368 | 1 |
| December | 572 | 0 |
| Year (annual) | 2,551 | 1,499 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093205. 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.
Has Marysville been warmer than normal lately?
2025 averaged 63.2°F, 1.2°F above the 1991-2020 normal of 62.0°F. 4 of the 4 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 63.4°F | +1.4°F | 11.11 |
| 2023 | 62.4°F | +0.4°F | 22.15 |
| 2024 | 65.1°F | +3.1°F | 25.45 |
| 2025 | 63.2°F | +1.2°F | 17.58 |
Source: observed years: ACIS, station USW00093205. A year counts only with all twelve months complete.
How does Marysville's climate compare?
Marysville is warmer than 121 of the other 218 places with their own NOAA record in California, and wetter than 135. Across the 7,247 U.S. stations with normals, its annual mean of 62.0°F is warmer than 80%.
In the Köppen classification computed from these normals, Marysville 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 Marysville share this climate record?
12 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.
- Yuba City, CAalso near: Colusa (21 mi, 61.5°F a year); Oroville (25 mi, 63.2°F a year)69,148 people · 4 mi NW
- Linda, CA23,215 people · 2 mi NE
- Olivehurst, CA19,071 people · 2 mi S
- Live Oak, CA9,503 people · 13 mi NW
- Plumas Lake, CA8,424 people · 9 mi S
- Wheatland, CA4,110 people · 11 mi SE
- Sutter, CA2,671 people · 10 mi W
- Sheridan, CA1,447 people · 15 mi SE
- Beale AFB, CA1,174 people · 12 mi E
- Rio Oso, CA421 people · 11 mi S
- Trowbridge, CA243 people · 12 mi S
- East Nicolaus, CA138 people · 13 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Marysville's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Marysville. This page uses Marysville Yuba County Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Marysville station USC00045385 | 3 mi N | 57 ft | 64.4°F | 40°F | 98°F | – | – | January 15 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Marysville's climate
What is the coldest month in Marysville?
December, with a normal high of 55°F and a normal low of 38°F. The warmest is July (96°F by day, 61°F at night).
What is the rainiest month in Marysville?
January, with 3.81 in of precipitation in a normal year; the driest is July with 0.00 in.
What plant hardiness zone is Marysville in?
The USDA's 2023 map puts Marysville in zone 9b in ZIP code 95901, the nearest ZIP area. By the same method at Marysville's NOAA station, the coldest night of a typical year reaches 25°F (20 years, 1991-2020): zone 9a.
How late can frost come in Marysville?
In half of years the last 32°F night comes after February 11; in one year in ten it comes after March 12. Waiting until March 12 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Colusa, CA25 miles from this station, 61.5°F a year
- Dobbins, CA26 miles from this station, 58.7°F a year
- Oroville, CA27 miles from this station, 63.2°F a year
- Grass Valley, CA28 miles from this station, 56.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made