Hamilton, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
Hamilton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Partly Cloudy——87°56°—
- SundayJul 5Overcast——87°59°0°
- MondayJul 6Overcast44%—80°59°-7°
- TuesdayJul 7Overcast44%—90°56°+10°
- WednesdayJul 8Overcast10%—90°58°0°
- ThursdayJul 9Mostly Clear——81°55°-9°
- FridayJul 10Clear——88°52°+7°
AQI 36 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:43 PM
- Moonset
- 10:39 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Hamilton at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 24 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59840
15-Day Forecast — Hamilton
- Sat87°56°2%
- Sun87°59°2%
- Mon80°59°44%
- Tue90°56°44%
- Wed90°58°10%
- Thu81°55°5%
- Fri88°52°3%
- Sat98°56°1%
- Sun82°54°3%
- Mon92°51°4%
- Tue102°58°11%
- Wed101°71°13%
- Thu96°66°13%
- Fri103°62°15%
- Sat98°64°16%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Hamilton
SPC includes Hamilton in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- 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.
ZIP codes in Hamilton
- 59840