Weather in Hamilton, Montana
High country wildflowers peak. Day 59 of spring. Read this microseason across nine climate regions →
Hamilton, MT
Sunday, May 17 at 5:14 AM
39
°
Overcast
Feels like
31°
Humidity
55%
Wind
8 mph
Sunrise
6:02 AM
Sunset
9:04 PM
Hamilton, MT
Hour by hour · 24h
48°
11p
47°
12a
45°
1a
44°
2a
43°
3a
44°
4a
44°
5a
44°
6a
44°
7a
48°
8a
49°
9a
50°
10a
52°
11a
54°
12p
55°
1p
57°
2p
58°
3p
59°
4p
59°
5p
59°
6p
58°
7p
56°
8p
54°
9p
50°
10p
Hamilton, MT
7-day forecast
- TodayMay 16Light Drizzle38%51°39°
- SundayMay 17Snow26%50°36°
- MondayMay 18Light Drizzle—57°32°
- TuesdayMay 19Light Drizzle—63°37°
- WednesdayMay 20Heavy Drizzle21%61°41°
- ThursdayMay 21Overcast20%70°39°
- FridayMay 22Overcast14%75°45°
Hamilton, MT
Next 24 hours · Cold now
Hamilton, MT
Anemometer · 24h winds · from true
From · True
SE
143° · veering 35°
Direction
SE
143°
Sustained
8
mph
Gust
11
mph
Peak 24h
24
avg 6
Beaufort · 3 · GENTLE BRZ
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
−24h−18h−12h−6hnow
Hamilton, MT
Air quality
42
AQI
Good
- PM 2.5
- 1.5 μg/m³
- PM 10
- 1.9 μg/m³
- NO₂
- 1.7 μg/m³
- Ozone
- 72.0 μg/m³
- UV Index
- 0.0 Low
Hamilton, MT
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:28 AM
Sunrise
6:02 AM
Daylight
15h 02m
Sunset
9:04 PM
Civil dusk
3:40 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Hamilton, MT
The moon
New Moon
0% illuminated
- Moonrise
- 12:01 PM
- Moonset
- 3:47 AM
- In sign
- ♊︎ Gemini
Hamilton, MT
Microseason · 28 of 72
May 16–20
High country wildflowers peak
bird
Hamilton at a glance
- Today vs. normal: 26°F below the seasonal normal for this latitude
- Last frost: May 24 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Cool-season window is open
As of May 17, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).