Weather StoryAlmanac, microseasons, and the day's weather story.

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

Hamilton, MT
Saturday, July 4 at 1:08 AM
60
°
Clear
Feels like
58°
Humidity
50%
Wind
2 mph
Sunrise
11:51 PM
Sunset
3:31 PM
Hamilton, MT
Hour by hour · 24h
24-Hour ForecastHamilton, MT: 24-hour forecast. Temperatures range from 56 to 87 degrees Fahrenheit.
L 56°H 87°
Hamilton, MT
7-day forecast
  1. Today
    Jul 4
    Partly Cloudy
    87°56°
  2. Sunday
    Jul 5
    Overcast
    87°59°
  3. Monday
    Jul 6
    Overcast
    44%
    80°59°-7°
  4. Tuesday
    Jul 7
    Overcast
    44%
    90°56°+10°
  5. Wednesday
    Jul 8
    Overcast
    10%
    90°58°
  6. Thursday
    Jul 9
    Mostly Clear
    81°55°-9°
  7. Friday
    Jul 10
    Clear
    88°52°+7°
Hamilton, MT
Anemometer · 24h winds · from true
NESW
From · True
S
187° · veering 27°
Direction
S
187°
Sustained
2
mph
Gust
5
mph
Peak 24h
12
avg 3
Beaufort · 1 · LIGHT AIR
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 3 · pk 12 @ 6:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 195SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Hamilton, MT
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
892.9
-2.0 mb in 3h · falling · 26.37 inHg
Now
892.9
mb
3h
-2.0
mb
12h
-4.8
mb
24h
+1.9
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 891898
885890895900905-21h-18h-15h-12h-9h-6h-3h-24hNOW897.7891.0892.9
−24h−18h−12h−6hnow
Deep low still deepening — rough seas, strong wind, persistent rain.
Hamilton, MT
Air quality
36
AQI
Good
-5 in 6h

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.

PM 2.5Good
2.8μg/m³
PM 10Good
4μg/m³
NO₂Good
8μg/m³
OzoneDRIVERGood
55μg/m³
UV IndexLow
0.0
Hamilton, MT
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
76.7mi
UNLIMITED
136 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
07:08 UTC · Hamilton, MT · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
07:08 UTC · Hamilton, MT · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Hamilton, MT
Satellite · infrared · animated
Hamilton, MT
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Hamilton, MT
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:12 AM
Sunrise
11:51 PM
Daylight
15h 40m
Sunset
3:31 PM
Civil dusk
10:11 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Hamilton, MT
The moon
Waning Gibbous
83% illuminated
Moonrise
11:43 PM
Moonset
10:39 AM
In sign
♓︎ Pisces
Hamilton, MT
Microseason
Jul 1–5

Monsoon storms drench the south

weather
Jan 150% of the yearDec 31

Read this microseason across nine climate regions →

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

  1. Sat87°56°2%
  2. Sun87°59°2%
  3. Mon80°59°44%
  4. Tue90°56°44%
  5. Wed90°58°10%
  6. Thu81°55°5%
  7. Fri88°52°3%
  8. Sat98°56°1%
  9. Sun82°54°3%
  10. Mon92°51°4%
  11. Tue102°58°11%
  12. Wed101°71°13%
  13. Thu96°66°13%
  14. Fri103°62°15%
  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

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.