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

Weather in Colstrip, Montana

High country wildflowers peak. Day 59 of spring. Read this microseason across nine climate regions →

Colstrip, MT
Sunday, May 17 at 5:18 AM
48
°
Overcast
Feels like
36°
Humidity
69%
Wind
23 mph
Sunrise
5:33 AM
Sunset
8:32 PM
Colstrip, MT
Hour by hour · 24h
53°
11p
51°
12a
50°
1a
52°
2a
51°
3a
49°
4a
49°
5a
47°
6a
53°
7a
58°
8a
59°
9a
61°
10a
63°
11a
65°
12p
66°
1p
68°
2p
68°
3p
69°
4p
68°
5p
67°
6p
65°
7p
61°
8p
57°
11%
9p
53°
10p
L 47°H 69°
Colstrip, MT
7-day forecast
  1. Today
    May 16
    Overcast
    72°41°
  2. Sunday
    May 17
    Overcast
    55°39°
  3. Monday
    May 18
    Light Drizzle
    46%
    46°34°
  4. Tuesday
    May 19
    Overcast
    65°32°
  5. Wednesday
    May 20
    Light Drizzle
    27%
    64°47°
  6. Thursday
    May 21
    Light Drizzle
    27%
    67°48°
  7. Friday
    May 22
    Overcast
    26%
    74°48°
Colstrip, MT
Anemometer · 24h winds · from true
NESW
From · True
NW
315° · veering 115°
Direction
NW
315°
Sustained
23
mph
Gust
34
mph
Peak 24h
37
avg 13
Beaufort · 5 · FRESH 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
avg 13 · pk 37 @ 11:00p
−24h−18h−12h−6hnow
Sustained 23 mph with gusts pulsing to 34 — flags snap, branches bend.
Colstrip, MT
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
894.4
-0.7 mb in 3h · rising · 26.41 inHg
Now
894.4
mb
3h
-0.7
mb
12h
-1.2
mb
24h
-4.0
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 894901
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Colstrip, MT
Air quality
47
AQI
Good
PM 2.5
6.8 μg/m³
PM 10
8.8 μg/m³
NO₂
1.7 μg/m³
Ozone
74.0 μg/m³
UV Index
0.0 Low
Colstrip, MT
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:59 AM
Sunrise
5:33 AM
Daylight
14h 59m
Sunset
8:32 PM
Civil dusk
3:08 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Colstrip, MT
The moon
New Moon
0% illuminated
Moonrise
11:33 AM
Moonset
3:14 AM
In sign
♊︎ Gemini
Colstrip, MT
Microseason · 28 of 72
May 16–20

High country wildflowers peak

bird
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Colstrip at a glance

  • Today vs. normal: 18°F below the seasonal normal for this latitude
  • Last frost: May 21 (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).

ZIP codes in Colstrip

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.