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

Weather in Sun Valley, Idaho

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

Sun Valley, ID
Sunday, May 17 at 5:09 AM
36
°
Clear
Feels like
28°
Humidity
41%
Wind
6 mph
Sunrise
6:10 AM
Sunset
8:56 PM
Sun Valley, ID
Hour by hour · 24h
47°
11p
46°
12a
45°
1a
43°
2a
42°
3a
38°
4a
37°
5a
36°
6a
36°
7a
43°
8a
47°
9a
52°
10a
56°
11a
58°
12p
59°
1p
60°
2p
61°
3p
61°
4p
61°
5p
59°
6p
56°
7p
53°
8p
50°
9p
47°
10p
L 36°H 61°
Sun Valley, ID
7-day forecast
  1. Today
    May 16
    Overcast
    54°36°
  2. Sunday
    May 17
    Snow
    48°31°
  3. Monday
    May 18
    Light Snow Shwrs
    50°28°
  4. Tuesday
    May 19
    Overcast
    57°33°
  5. Wednesday
    May 20
    Overcast
    63°37°
  6. Thursday
    May 21
    Overcast
    66°37°
  7. Friday
    May 22
    Overcast
    11%
    72°41°
Sun Valley, ID
Anemometer · 24h winds · from true
NESW
From · True
NNW
344° · backing 10°
Direction
NNW
344°
Sustained
6
mph
Gust
17
mph
Peak 24h
21
avg 10
Beaufort · 2 · LIGHT 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 21 @ 2:00p
−24h−18h−12h−6hnow
Light breeze backing 10° from the nnw.
Sun Valley, ID
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
812.5
+1.5 mb in 3h · falling · 23.99 inHg
Now
812.5
mb
3h
+1.5
mb
12h
-0.4
mb
24h
+2.6
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 810814
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Sun Valley, ID
Air quality
58
AQI
Moderate
PM 2.5
1.7 μg/m³
PM 10
2.3 μg/m³
NO₂
0.8 μg/m³
Ozone
100.0 μg/m³
UV Index
0.0 Low
Sun Valley, ID
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:39 AM
Sunrise
6:10 AM
Daylight
14h 46m
Sunset
8:56 PM
Civil dusk
3:31 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Sun Valley, ID
The moon
New Moon
0% illuminated
Moonrise
12:15 PM
Moonset
3:36 AM
In sign
♊︎ Gemini
Sun Valley, 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 →

Sun Valley at a glance

  • Today vs. normal: 32°F below the seasonal normal for this latitude
  • Last frost: May 8 (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 Sun Valley

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.