Lavina, Montana Weather
Pikas hayfeeding in granite peaks. Day 78 of spring. Read this microseason across nine climate regions →
Lavina weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Overcast——86°48°—
- SaturdayJun 6Overcast20%—87°54°+1°
- SundayJun 7Light Showers66%0.02″66°46°-21°
- MondayJun 8Light Drizzle42%0.01″79°44°+13°
- TuesdayJun 9Light Drizzle41%0.01″75°55°-4°
- WednesdayJun 10Light Drizzle49%—67°50°-8°
- ThursdayJun 11Light Drizzle50%—71°47°+4°
AQI 38 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (steady decline since this morning). PM2.5 at 6.9 µg/m³ (AQI 38) with a 0.73 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
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 30 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 13 by mid-afternoon.
- Present
- AQI 30
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 13
PM × Wind × Precip
PM2.5 at 6.9 µg/m³ (AQI 38) with a 0.73 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.73
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 6:36 AM
- Moonset
- 4:09 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Lavina at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: May 24 (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
Warm-season window is open
As of June 5, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
SPC Convective Outlook
Storm Prediction Center — Lavina
SPC has placed Lavina in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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
Lavina's warmest month is July (~69°F mean) and its coldest is January (~23°F). Rainfall peaks in June (3.0 inches) and bottoms out in February (0.4 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 23° | 0.5″ | 2 |
| February | 26° | 0.4″ | 2 |
| March | 33° | 0.9″ | 3 |
| April | 42° | 1.9″ | 5 |
| May | 52° | 2.4″ | 6 |
| June | 61° | 3.0″ | 6 |
| July | 69° | 1.4″ | 3 |
| August | 67° | 1.1″ | 4 |
| September | 57° | 1.2″ | 3 |
| October | 44° | 1.3″ | 4 |
| November | 33° | 0.6″ | 2 |
| December | 24° | 0.4″ | 2 |
Regional context
Lavina's climate, per the NOAA NCEI 1991-2020 normals from the nearest reporting station, runs cold-winter and warm-summer. January means hover near 23°F while July climbs to 69°F — a 46°F seasonal swing typical of northern-tier latitudes. Annual precipitation totals about 15.1 inches spread across roughly 41 days with measurable rain or snow.
Precipitation runs summer-dominant here: June averages 3.0 inches across 5.7 days with measurable rain, driven mostly by warm-season storms and thunderstorm activity, while February drops to just 0.4 inches across 2.1 rainy days under drier cool-season air. The warm-season-wet rhythm lines Lavina up with places like Broadview, MT, Ryegate, MT and Golden Valley Colony, MT, where the May-September stretch delivers the bulk of the year's precipitation.
The frost-sensitive growing window opens around late-May, when overnight lows reliably clear freezing for cool-season crops like kale, peas, spinach, and parsnips. Heat-loving transplants like tomatoes, peppers, and squash generally hold off for another 10-14 days to clear the last spring frost risk window. The window closes around early-October, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. These dates represent 30-year central tendencies; actual year-to-year variation can shift either bookend by 7-14 days, and local microclimate features within Lavina — cold-air drainage on calm clear nights, slope aspect, distance from any nearby lake or river — can push the practical frost window earlier or later than the regional average.
Similar climates: Broadview, MT, Ryegate, MT, Golden Valley Colony, MT, Mountain View Colony, MT, Klein, MT.
Frequently asked
- When does it freeze in Lavina?
- Lavina's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Lavina?
- June is the wettest month with about 3.0 inches of rain on average; the city receives roughly 15 inches annually.
- What is the warmest month in Lavina?
- July is typically warmest, averaging about 69°F.
- What is the coldest month in Lavina?
- January is typically coldest, averaging about 23°F.
- When can I start a vegetable garden in Lavina?
- 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 Lavina get?
- Lavina averages about 41 rainy days per year.
- What hardiness zone is Lavina?
- Lavina'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
Lavina, Montana sits in a cold semi-arid climate zone. January means hover near 23°F while July averages 69°F — a 46°F seasonal swing.
Across the year, Lavina receives about 15 inches of precipitation spread over roughly 41 rainy days.
The rhythm of the year is set by latitude (46.3°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.