Hardly any U.S. towns see harsher January nights than Myrtle
High summer brings afternoon highs near 81°. June is the wettest month here, with about 5.6 times the rain of January. Its July afternoons stay fresher than in 86% of U.S. towns. Plan time outside from May to September, when highs sit at 68–81°.
A year in Myrtle at a glance
Each month’s typical high and low, and what it brings.
What stands out about Myrtle’s climate
Compared with towns across the U.S., with Myrtle’s place in Minnesota beside it.
What a year in Myrtle feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 164 frost-free days a year
In half of years the last 32° night comes by April 27 and the first by October 9. Frost and day counts come from NOAA’s station at Albert Lea 3se, MN, 8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Myrtle’s center in zone 5a: 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 40 inches of snow a winter
Snow, measured at Albert Lea 3se, MN, is heaviest from January through February, about 9 inches a month. Precipitation (rain plus melted snow) adds up to 36 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 111 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Myrtle
92% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Albert Lea 3se, MN.
Living with Myrtle’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
164 frost-free days in zone 5a. The last frost comes by Apr 27 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 9.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September.
Parks & trails →Of the yearly building losses FEMA expects in Myrtle from natural hazards, river flooding is the largest share (43%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Myrtle and its neighbors
Every town next door is within a degree of Myrtle in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Myrtle’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Myrtle, MN | 7° | 81° | 36" | 40" |
| Grand Rapids, WI | 7° | 81° | 34" | 48" |
| Plattsburgh, NY | 9° | 81° | 35" | 50" |
| Colchester, VT | 10° | 81° | 38" | 50" |
| Hanover, NH | 9° | 82° | 39" | 61" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Myrtle averaged 1.0° warmer than the 1900s. The biggest change is in December (+3.1°).
A smaller shift than in 80% 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 Myrtle compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Myrtle’s place among Minnesota’s.
Myrtle weather by month
Highs, lows and precipitation from NOAA’s grid at Myrtle’s center; snow, wet days and snow on the ground from Albert Lea 3se, MN. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 23° | 7° | 1.0" | 8.9" | 7 | 26 | 4° – 28° |
| February | 27° | 11° | 1.0" | 9.8" | 6 | 21 | 8° – 30° |
| March | 40° | 23° | 2.0" | 6.6" | 8 | 14 | 24° – 48° |
| April | 56° | 35° | 3.8" | 2.8" | 11 | 2 | 34° – 53° |
| May | 68° | 47° | 4.8" | 0.3" | 13 | 0 | 51° – 64° |
| June | 78° | 57° | 5.6" | 0.0" | 12 | 0 | 64° – 72° |
| July | 81° | 61° | 4.8" | 0.0" | 11 | 0 | 65° – 77° |
| August | 79° | 58° | 4.1" | 0.0" | 10 | 0 | 63° – 73° |
| September | 73° | 50° | 3.5" | 0.0" | 9 | 0 | 54° – 67° |
| October | 59° | 37° | 2.6" | 0.3" | 10 | 0 | 42° – 53° |
| November | 42° | 25° | 1.7" | 2.7" | 7 | 4 | 25° – 46° |
| December | 28° | 14° | 1.3" | 8.1" | 7 | 18 | 6° – 30° |
| Year | 55° | 35° | 36.1" | 39.5" | 111 | 84 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 24° to 48°. June is the most reliable, staying within 8°.
Where Myrtle’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 Myrtle’s center.
- Snow: Albert Lea 3se, MN.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Albert Lea 3se, MN, 8 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- 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 Myrtle’s climate
What is the weather like in Myrtle?
A typical July afternoon reaches 81°, a January night drops to 7°, and about 40 inches of snow falls in a normal winter. Colder January nights than 97% of U.S. towns; cooler July afternoons than 86% of U.S. towns.
How cold does it get in Myrtle in winter?
January nights average 7°. About 159 nights a year reach 32° or below and 28 reach 0° or below. In the coldest January of the last 30 years the month averaged 4°.
How much snow does Myrtle get?
About 40 inches in a normal winter at Albert Lea 3se, MN, heaviest from January through February, about 9 inches a month, with snow on the ground about 84 days a year.
How hot does it get in Myrtle?
July, with a typical high of 81° and a low of 61°. About 8 days a year reach 90° (Albert Lea 3se, MN).
When is the first and last frost in Myrtle?
In half of years the last spring frost (32°) comes by April 27 and the first fall frost by October 9, about 164 frost-free days, at Albert Lea 3se, MN.
What growing zone is Myrtle in?
Zone 5a 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 Myrtle?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Myrtle getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 80% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Myrtle.
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.