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

Weather in American Falls, Idaho

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

American Falls, ID
Sunday, May 17 at 1:46 AM
55
°
Clear
Feels like
42°
Humidity
22%
Wind
17 mph
Sunrise
6:07 AM
Sunset
8:48 PM
American Falls, ID
Hour by hour · 24h
69°
7p
66°
8p
60°
9p
57°
10p
55°
11p
53°
12a
51°
1a
49°
2a
47°
3a
44°
4a
42°
5a
43°
6a
46°
7a
48°
8a
52°
9a
56°
10a
59°
11a
62°
12p
64°
1p
66°
2p
67°
3p
67°
4p
67°
5p
67°
6p
L 42°H 69°
American Falls, ID
7-day forecast
  1. Today
    May 16
    Overcast
    61°43°
  2. Sunday
    May 17
    Overcast
    55°37°
  3. Monday
    May 18
    Overcast
    15%
    61°39°
  4. Tuesday
    May 19
    Overcast
    66°39°
  5. Wednesday
    May 20
    Light Drizzle
    67°47°
  6. Thursday
    May 21
    Partly Cloudy
    70°37°
  7. Friday
    May 22
    Overcast
    78°48°
American Falls, ID
Anemometer · 24h winds · from true
NESW
From · True
W
273° · veering 59°
Direction
W
273°
Sustained
17
mph
Gust
26
mph
Peak 24h
31
avg 13
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 13 · pk 31 @ 6:00p
−24h−18h−12h−6hnow
Sustained 17 mph with gusts pulsing to 26 — flags snap, branches bend.
American Falls, ID
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
863.0
+0.6 mb in 3h · steady · 25.48 inHg
Now
863.0
mb
3h
+0.6
mb
12h
-1.5
mb
24h
+2.8
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 859865
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
American Falls, ID
Air quality
47
AQI
Good
PM 2.5
1.4 μg/m³
PM 10
2.3 μg/m³
NO₂
0.5 μg/m³
Ozone
109.0 μg/m³
UV Index
0.5 Low
American Falls, ID
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:36 AM
Sunrise
6:07 AM
Daylight
14h 41m
Sunset
8:48 PM
Civil dusk
3:21 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
American Falls, ID
The moon
New Moon
0% illuminated
Moonrise
12:12 PM
Moonset
3:26 AM
In sign
♉︎ Taurus
American Falls, ID
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 →

American Falls at a glance

  • Today vs. normal: 14°F below the seasonal normal for this latitude
  • Last frost: May 3 (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 American Falls

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.