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

Weather in Challis, Idaho

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

Challis, ID
Sunday, May 17 at 3:57 AM
41
°
Overcast
Feels like
31°
Humidity
34%
Wind
9 mph
Sunrise
6:07 AM
Sunset
8:58 PM
Challis, ID
Hour by hour · 24h
58°
9p
55°
10p
51°
11p
49°
12a
47°
1a
45°
2a
43°
3a
40°
4a
40°
5a
38°
6a
38°
7a
43°
8a
48°
9a
52°
10a
56°
11a
60°
12p
62°
1p
64°
2p
64°
3p
66°
4p
65°
5p
64°
6p
61°
7p
58°
8p
L 38°H 66°
Challis, ID
7-day forecast
  1. Today
    May 16
    Overcast
    56°37°
  2. Sunday
    May 17
    Overcast
    14%
    50°29°
  3. Monday
    May 18
    Overcast
    53°31°
  4. Tuesday
    May 19
    Overcast
    60°39°
  5. Wednesday
    May 20
    Light Drizzle
    11%
    61°42°
  6. Thursday
    May 21
    Overcast
    11%
    70°40°
  7. Friday
    May 22
    Overcast
    13%
    74°48°
Challis, ID
Anemometer · 24h winds · from true
NESW
From · True
NNW
335° · backing 34°
Direction
NNW
335°
Sustained
9
mph
Gust
16
mph
Peak 24h
22
avg 10
Beaufort · 3 · GENTLE 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 10 · pk 22 @ 2:00p
−24h−18h−12h−6hnow
Light breeze backing 34° from the nnw.
Challis, ID
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
840.6
+0.7 mb in 3h · falling · 24.82 inHg
Now
840.6
mb
3h
+0.7
mb
12h
+1.7
mb
24h
+4.7
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 836841
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Challis, ID
Air quality
60
AQI
Moderate
PM 2.5
1.9 μg/m³
PM 10
2.7 μg/m³
NO₂
0.3 μg/m³
Ozone
109.0 μg/m³
UV Index
0.0 Low
Challis, ID
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:35 AM
Sunrise
6:07 AM
Daylight
14h 51m
Sunset
8:58 PM
Civil dusk
3:33 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Challis, ID
The moon
New Moon
0% illuminated
Moonrise
12:10 PM
Moonset
3:39 AM
In sign
♊︎ Gemini
Challis, 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 →

Challis at a glance

  • Today vs. normal: 26°F below the seasonal normal for this latitude
  • Last frost: May 13 (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 Challis

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.