Climate Comfort Score
80/100
Excellent
NOAA 1991–2020 normals 64°F annual avg Public-domain federal data
Marysville, CA Climate
Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →
- 64°F
- Avg annual temp
- 80/100
- Comfort score
- 331d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Marysville
Marysville, California averages 64°F a year and scores 80/100 on the comfort index - excellent, milder than 82% of U.S. cities.
- 64°F
- annual average temperature (NOAA normal)
- 80/100
- comfort score, milder than 82% of U.S. cities
- 331 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
64°F (18°C)
Avg High
77°F
Avg Low
52°F
Annual Precip
N/A
Comfort Score
80/100
Excellent
Avg Annual Temperature
64°F
30-year mean (NOAA NCEI)
Annual Precipitation
N/A
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Marysville) 80.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Marysville area.
How Marysville compares to every U.S. city
Marysville's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
80 Top 18% higher than 82% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Marysville
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Marysville captures average conditions across the spread shown, the most recent decade is warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
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 |
Monthly Precipitation
Average monthly rainfall
January N/A
February N/A
March N/A
April N/A
May N/A
June N/A
July N/A
August N/A
September N/A
October N/A
November N/A
December N/A
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
What Marysville's climate means for you
Marysville runs 64°F a year - peaking in July, coldest in January.
- Gardeners get about 331 frost-free days, with the last spring freeze near January 15 - plan the planting calendar around it, not the regional average.
- Energy bills track 2,125 heating and 1,917 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Marysville, CA
Based on station USC00045385 feeding NOAA's 1991–2020 climate normals, Marysville, California averages 64°F a year, ranging from a mean daily high of 77°F to a mean daily low of 52°F. July is typically the warmest month of the year, while January is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Beyond temperature, Marysville averages an uncharted amount of precipitation annually, predominantly as rainfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 331 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near January 15 and the first fall freeze near December 12. Turning to energy use, 2,125 heating degree days and 1,917 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Marysville scores 80/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Marysville, CA? ▼
The average annual temperature in Marysville, California is 64°F. The warmest month averages 98°F (37°C) and the coldest averages 40°F (4°C).
How much rain does Marysville get? ▼
Marysville receives an unknown amount of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Marysville? ▼
Marysville has a climate comfort score of 80/100 (Excellent), milder than 82% of U.S. cities in the PlainClimate database.
When is the growing season in Marysville? ▼
Marysville has approximately 331 frost-free days per year, with the last spring freeze around January 15 and the first fall freeze around December 12.
How much energy does heating and cooling require in Marysville? ▼
Marysville has 2,125 heating degree days and 1,917 cooling degree days annually, a fairly balanced heating/cooling split. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Marysville climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00045385 near Marysville.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00045385. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.