Photo: Frank Jay Haynes · Public domainFew U.S. towns have cooler summers than Marysville
January nights here settle around 15°. By precipitation alone, it ranks drier than 91% of U.S. towns. Decade by decade the climate has edged up, 1.5° above 1901–2000. Long walks are most pleasant from June to September, when afternoons reach 66–78°.
A year in Marysville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Marysville’s climate
Compared with towns across the U.S., with Marysville’s place in Montana beside it.
What a year in Marysville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 100 frost-free days a year
In half of years the last 32° night comes by June 4 and the first by September 14. Frost and day counts come from Austin 1 W, MT, 7 miles away.
The 2023 USDA map puts Marysville’s center in zone 4b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −20°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 18 inches of rain a year
June is the wettest month and February the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Marysville
99% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from September through June.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Austin 1 W, MT.
Living with Marysville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
100 frost-free days in zone 4b. The last frost comes by Jun 4 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 14.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September. 1.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Marysville from natural hazards, river flooding is the largest share (36%); heat waves, cold waves, winter storms and ice storms together are 33%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Marysville and similar climates
TownRatings has no climate map of the towns around Marysville yet.
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Marysville averaged 1.5° warmer than the 1900s. The biggest change is in January (+4.4°).
A bigger shift than in 58% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Marysville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Marysville’s place among Montana’s.
Marysville weather by month
Highs, lows and precipitation from NOAA’s grid at Marysville’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 31° | 15° | 1.2" | 14° – 31° |
| February | 33° | 15° | 1.0" | 8° – 33° |
| March | 42° | 22° | 1.1" | 21° – 39° |
| April | 49° | 28° | 1.6" | 33° – 44° |
| May | 58° | 35° | 2.5" | 42° – 52° |
| June | 67° | 42° | 2.9" | 50° – 62° |
| July | 78° | 49° | 1.3" | 53° – 71° |
| August | 77° | 48° | 1.2" | 56° – 66° |
| September | 66° | 41° | 1.3" | 50° – 58° |
| October | 51° | 32° | 1.2" | 34° – 48° |
| November | 38° | 21° | 1.1" | 21° – 38° |
| December | 30° | 15° | 1.4" | 14° – 29° |
| Year | 52° | 30° | 17.8" |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 8° to 33°. September is the most reliable, staying within 9°.
Where Marysville’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Marysville’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Austin 1 W, MT, 7 miles from the town’s center, 600 ft lower; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Marysville’s climate
What is the weather like in Marysville?
A typical July afternoon reaches 78°, a January night drops to 15°. Colder January nights than 83% of U.S. towns; cooler July afternoons than 96% of U.S. towns.
How cold does it get in Marysville in winter?
December nights average 15°. About 204 nights a year reach 32° or below and 19 reach 0° or below. In the coldest December of the last 30 years the month averaged 14°.
How hot does it get in Marysville?
July, with a typical high of 78° and a low of 49°. About 4 days a year reach 90° (Austin 1 W, MT).
When is the first and last frost in Marysville?
In half of years the last spring frost (32°) comes by June 4 and the first fall frost by September 14, about 100 frost-free days, at Austin 1 W, MT.
What growing zone is Marysville in?
Zone 4b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −20°.
What is the best time of year to visit Marysville?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Marysville getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 58% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Marysville.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.