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

Weather in East Helena, Montana

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

East Helena, MT
Sunday, May 17 at 2:34 AM
46
°
Overcast
Feels like
34°
Humidity
47%
Wind
16 mph
Sunrise
5:51 AM
Sunset
8:56 PM
East Helena, MT
Hour by hour · 24h
58°
8p
54°
9p
52°
10p
51°
11p
49°
12a
48°
1a
46°
2a
45°
3a
44°
4a
43°
5a
44°
6a
45°
7a
49°
8a
51°
9a
53°
10a
56°
11a
58°
12p
60°
1p
61°
2p
62°
3p
62°
4p
61°
5p
61°
6p
60°
7p
L 43°H 62°
East Helena, MT
7-day forecast
  1. Today
    May 16
    Light Drizzle
    39%
    51°39°
  2. Sunday
    May 17
    Overcast
    20%
    45°36°
  3. Monday
    May 18
    Light Drizzle
    55°35°
  4. Tuesday
    May 19
    Overcast
    65°37°
  5. Wednesday
    May 20
    Light Snow Shwrs
    42%
    55°41°
  6. Thursday
    May 21
    Overcast
    22%
    66°37°
  7. Friday
    May 22
    Overcast
    34%
    76°45°
East Helena, MT
Anemometer · 24h winds · from true
NESW
From · True
WNW
287° · backing 46°
Direction
WNW
287°
Sustained
16
mph
Gust
27
mph
Peak 24h
27
avg 9
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 9 · pk 27
−24h−18h−12h−6hnow
Sustained 16 mph with gusts pulsing to 27 — flags snap, branches bend.
East Helena, MT
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
880.0
+0.4 mb in 3h · steady · 25.99 inHg
Now
880.0
mb
3h
+0.4
mb
12h
+1.1
mb
24h
+1.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 878880
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
East Helena, MT
Air quality
42
AQI
Good
PM 2.5
1.9 μg/m³
PM 10
2.2 μg/m³
NO₂
1.1 μg/m³
Ozone
87.0 μg/m³
UV Index
0.1 Low
East Helena, MT
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:18 AM
Sunrise
5:51 AM
Daylight
15h 05m
Sunset
8:56 PM
Civil dusk
3:32 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
East Helena, MT
The moon
New Moon
0% illuminated
Moonrise
11:51 AM
Moonset
3:39 AM
In sign
♊︎ Gemini
East Helena, 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 →

East Helena at a glance

  • Today vs. normal: 19°F below the seasonal normal for this latitude
  • Last frost: May 26 (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 East Helena

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.