Weather in Custer, Montana
High country wildflowers peak. Day 59 of spring. Read this microseason across nine climate regions →
Custer, MT
Sunday, May 17 at 5:03 AM
47
°
Overcast
Feels like
39°
Humidity
70%
Wind
14 mph
Sunrise
5:35 AM
Sunset
8:37 PM
Custer, MT
Hour by hour · 24h
56°
11p
57°
12a
57°
1a
55°
2a
55°
3a
55°
4a
53°
5a
51°
6a
54°
7a
59°
8a
61°
9a
63°
10a
65°
11a
67°
12p
69°
1p
70°
2p
71°
3p
71°
4p
70°
5p
69°
6p
68°
7p
65°
8p
60°
9p
56°
10p
Custer, MT
7-day forecast
- TodayMay 16Overcast13%72°44°
- SundayMay 17Overcast12%55°41°
- MondayMay 18Overcast—53°36°
- TuesdayMay 19Overcast—68°35°
- WednesdayMay 20Light Drizzle22%61°48°
- ThursdayMay 21Light Drizzle22%69°48°
- FridayMay 22Overcast24%76°48°
Custer, MT
Next 24 hours · Cool now
Custer, MT
Anemometer · 24h winds · from true
From · True
NW
324° · backing 68°
Direction
NW
324°
Sustained
14
mph
Gust
24
mph
Peak 24h
45
avg 10
Beaufort · 4 · MOD 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
Custer, MT
Air quality
47
AQI
Good
- PM 2.5
- 7.7 μg/m³
- PM 10
- 9.1 μg/m³
- NO₂
- 1.1 μg/m³
- Ozone
- 83.0 μg/m³
- UV Index
- 0.0 Low
Custer, MT
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:02 AM
Sunrise
5:35 AM
Daylight
15h 02m
Sunset
8:37 PM
Civil dusk
3:13 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Custer, MT
The moon
New Moon
0% illuminated
- Moonrise
- 11:35 AM
- Moonset
- 3:18 AM
- In sign
- ♊︎ Gemini
Custer, MT
Microseason · 28 of 72
May 16–20
High country wildflowers peak
bird
Custer at a glance
- Today vs. normal: 19°F below the seasonal normal for this latitude
- Last frost: May 23 (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).