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

Weather in Forsyth, Montana

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

Forsyth, MT
Sunday, May 17 at 3:48 AM
54
°
Overcast
Feels like
45°
Humidity
64%
Wind
17 mph
Sunrise
5:32 AM
Sunset
8:34 PM
Forsyth, MT
Hour by hour · 24h
63°
9p
58°
10p
55°
11p
53°
12a
53°
1a
52°
2a
52°
3a
53°
11%
4a
51°
5a
50°
6a
53°
7a
59°
8a
62°
9a
64°
10a
66°
11a
69°
12p
70°
1p
71°
2p
71°
3p
71°
4p
71°
5p
70°
6p
68°
7p
65°
8p
L 50°H 71°
Forsyth, MT
7-day forecast
  1. Today
    May 16
    Overcast
    15%
    75°43°
  2. Sunday
    May 17
    Overcast
    12%
    58°42°
  3. Monday
    May 18
    Light Drizzle
    11%
    49°37°
  4. Tuesday
    May 19
    Overcast
    67°35°
  5. Wednesday
    May 20
    Light Drizzle
    16%
    66°48°
  6. Thursday
    May 21
    Overcast
    16%
    70°50°
  7. Friday
    May 22
    Overcast
    22%
    76°50°
Forsyth, MT
Anemometer · 24h winds · from true
NESW
From · True
NNW
330° · backing 84°
Direction
NNW
330°
Sustained
17
mph
Gust
28
mph
Peak 24h
37
avg 11
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
avg 11 · pk 37 @ 8:00p
−24h−18h−12h−6hnow
Sustained 17 mph with gusts pulsing to 28 — flags snap, branches bend.
Forsyth, MT
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
917.1
-0.4 mb in 3h · rising · 27.08 inHg
Now
917.1
mb
3h
-0.4
mb
12h
-2.6
mb
24h
-4.4
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 916923
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Forsyth, MT
Air quality
49
AQI
Good
PM 2.5
5.3 μg/m³
PM 10
7.5 μg/m³
NO₂
1.9 μg/m³
Ozone
76.0 μg/m³
UV Index
0.0 Low
Forsyth, MT
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:58 AM
Sunrise
5:32 AM
Daylight
15h 02m
Sunset
8:34 PM
Civil dusk
3:10 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Forsyth, MT
The moon
New Moon
0% illuminated
Moonrise
11:31 AM
Moonset
3:15 AM
In sign
♊︎ Gemini
Forsyth, 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 →

Forsyth at a glance

  • Today vs. normal: 11°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).

ZIP codes in Forsyth

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.