Marysville, CA Climate: Temperature by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Marysville's primary NOAA station, MARYSVILLE.
The climate verdict for Marysville
Marysville, California has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 64°F. July is the warmest month at 81°F and January the coldest at 49°F.
- 64°F
- annual average temperature (NOAA normal)
- 331 days
- frost-free days per growing season
Marysville: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00045385 · Marysville, CA 64°F mean
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-UNK · SWING-MID · COMF-UNK · LOAD-MIX · STN-1 · BOOK-PART
- TEMP-MILD 64°F
- RANK-UPPER #5,900
- PHOTO-FINISH ≈ Alabaster Shelb…
- PRCP-UNK Rain n/a
- SWING-MID 32°F
- COMF-UNK Comfort n/a
- LOAD-MIX H/C balanced
- STN-1 USC00045385
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Alabaster Shelby County, AL (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every CA station list.
- Marysville (this station) 64°F
- Hot Belzoni, MS 64°F
- Near Alabaster Shelb…, AL 64°F
- Near Ashland, LA 64°F
- Near Bamberg, SC 64°F
Climate Living Index · Marysville
Marysville: 85/100 · grade A
Marysville publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Marysville, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 331 days/year | 100/100 · A |
| Annual temperature balance | 64.4°F · 3.1° from 67.5°F | 91/100 · A |
| Normal heat + freeze calendar | 104 calendar days | 74/100 · B |
Marysville · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · balanced station
Where Marysville sits across the climate record
Available NOAA 1991–2020 fields for Marysville are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- Top 14% warmest
- Among 6,861 stations, Marysville sits in the warmer third of annual means.
- Seasonal temperature swing
- Narrower than 87%
- Warmest-to-coldest month gap for Marysville is compact versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 57°F (14°C) | 40°F (5°C) | 49°F (9°C) | N/A | 2.9 | 0.0 |
| February | 63°F (17°C) | 43°F (6°C) | 53°F (12°C) | N/A | 0.5 | 0.0 |
| March | 68°F (20°C) | 46°F (8°C) | 57°F (14°C) | N/A | 0.1 | 0.0 |
| April | 75°F (24°C) | 49°F (10°C) | 62°F (17°C) | N/A | 0.0 | 0.8 |
| May | 83°F (28°C) | 56°F (13°C) | 69°F (21°C) | N/A | 0.0 | 8.5 |
| June | 92°F (33°C) | 61°F (16°C) | 76°F (25°C) | N/A | 0.0 | 18.2 |
| July | 98°F (37°C) | 64°F (18°C) | 81°F (27°C) | N/A | 0.0 | 27.5 |
| August | 97°F (36°C) | 63°F (17°C) | 80°F (27°C) | N/A | 0.0 | 26.4 |
| September | 91°F (33°C) | 60°F (15°C) | 75°F (24°C) | N/A | 0.0 | 18.4 |
| October | 80°F (27°C) | 53°F (11°C) | 66°F (19°C) | N/A | 0.0 | 4.7 |
| November | 67°F (19°C) | 44°F (7°C) | 55°F (13°C) | N/A | 0.7 | 0.0 |
| December | 58°F (14°C) | 40°F (4°C) | 49°F (9°C) | N/A | 3.7 | 0.0 |
The year, day by day
The year in Marysville runs from a mild 39°F around December 21 to 99°F at the peak near July 23, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 9 through September 20, covering 104 dates. The broader mild season, normal highs of 70°F or more, runs March 27 to November 6.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 39°F around December 21.
The widest day
July 31 carries the biggest normal gap between afternoon and dawn, 35°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Marysville.
Where Marysville Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 104 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Daily temperature swings run wider than most of the country, peaking near 35°F between the normal high and low.
Marysville earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
December 12
50% probability date
Last Spring Freeze
January 15
50% probability date
Growing Season
331 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,125
Higher = more heating needed
Cooling Degree Days
1,917
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CA closest to Marysville on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (64°F here).
- Ashland, LA 64°F · 0.0°F off
- Bamberg, SC 64°F · 0.0°F off
- Belzoni, MS 64°F · 0.0°F off
- Benton, LA 64°F · 0.0°F off
Data-derived climate profile
How Marysville's climate pattern fits together
mixed demand · mid swing
July and January mark the typical warm and cold ends of the calendar in Marysville's middle-range seasonal profile. The measured spread is 32.3°F. The annual average is 64°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Marysville's normal, at 2,125 and 1,917 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
The frost-free window extends for about 331 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
A moisture-range label is withheld because Marysville's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
These labels group NOAA 1991-2020 normals from Marysville's primary station, where heating and cooling demand are close enough that neither season sets the character on its own. On a balanced station like Marysville, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Marysville's climate
How many days above 90°F does Marysville get? ▼
How much energy does heating and cooling require in Marysville? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Marysville's primary station: MARYSVILLE (USC00045385). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 0646170). Match rule for Marysville: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Marysville comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.