Mahtomedi, Minnesota Weather
Prairie lightning bugs rise. Day 76 of spring. Read this microseason across nine climate regions →
Mahtomedi weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——82°61°—
- ThursdayJun 4Light Rain25%0.11″83°64°+1°
- FridayJun 5Light Showers66%—81°66°-2°
- SaturdayJun 6Clear33%—80°60°-1°
- SundayJun 7Overcast16%—84°60°+4°
- MondayJun 8Light Drizzle50%0.05″73°64°-11°
- TuesdayJun 9Light Drizzle40%—81°65°+8°
Ozone at AQI 95 — peak already passed at 1 PM under clear skies. AQI up 38 in the last 6 hours — air quality is degrading. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 95 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 95
- UV peak
- 2.4 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 95
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 4:25 AM
- Moonset
- 12:51 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Mahtomedi at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: May 16 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Mahtomedi
SPC has placed Mahtomedi in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Mahtomedi's warmest month is July (~73°F mean) and its coldest is January (~16°F). Rainfall peaks in June (4.6 inches) and bottoms out in January (0.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 16° | 0.5″ | 1 |
| February | 21° | 0.5″ | 1 |
| March | 33° | 1.4″ | 4 |
| April | 47° | 2.6″ | 6 |
| May | 59° | 4.0″ | 8 |
| June | 69° | 4.6″ | 8 |
| July | 73° | 4.0″ | 6 |
| August | 71° | 4.1″ | 6 |
| September | 63° | 3.1″ | 5 |
| October | 49° | 2.5″ | 5 |
| November | 35° | 1.3″ | 3 |
| December | 22° | 0.7″ | 2 |
Regional context
Mahtomedi sits within a warm-summer humid continental climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Minneapolis, MN, St. Paul, MN, Rochester, MN, Duluth, MN, St. Cloud, MN.
Frequently asked
- When does it freeze in Mahtomedi?
- Mahtomedi's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Mahtomedi?
- June is the wettest month with about 4.6 inches of rain on average; the city receives roughly 29 inches annually.
- What is the warmest month in Mahtomedi?
- July is typically warmest, averaging about 73°F.
- What is the coldest month in Mahtomedi?
- January is typically coldest, averaging about 16°F.
- When can I start a vegetable garden in Mahtomedi?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Mahtomedi get?
- Mahtomedi averages about 54 rainy days per year.
- What hardiness zone is Mahtomedi?
- Mahtomedi's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Mahtomedi, Minnesota sits in a warm-summer humid continental climate zone. January means hover near 16°F while July averages 73°F — a 57°F seasonal swing.
Across the year, Mahtomedi receives about 29 inches of precipitation spread over roughly 54 rainy days.
The rhythm of the year is set by latitude (45.1°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.