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

Weather in Lyman, Wyoming

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

Lyman, WY
Sunday, May 17 at 1:22 AM
57
°
Overcast
Feels like
44°
Humidity
25%
Wind
18 mph
Sunrise
6:01 AM
Sunset
8:34 PM
Lyman, WY
Hour by hour · 24h
65°
7p
61°
8p
55°
9p
50°
10p
46°
11p
44°
12a
43°
1a
41°
2a
40°
3a
40°
4a
38°
5a
37°
6a
39°
7a
46°
8a
53°
9a
60°
10a
66°
11a
68°
12p
69°
1p
70°
2p
70°
3p
70°
4p
69°
5p
67°
6p
L 37°H 70°
Lyman, WY
7-day forecast
  1. Today
    May 16
    Overcast
    10%
    65°38°
  2. Sunday
    May 17
    Heavy Snow
    59%
    50°35°
  3. Monday
    May 18
    Light Snow Shwrs
    100%
    35°20°
  4. Tuesday
    May 19
    Foggy
    11%
    37°16°
  5. Wednesday
    May 20
    Overcast
    53°30°
  6. Thursday
    May 21
    Overcast
    13%
    59°36°
  7. Friday
    May 22
    Overcast
    66°41°
Lyman, WY
Anemometer · 24h winds · from true
NESW
From · True
W
274° · veering 8°
Direction
W
274°
Sustained
18
mph
Gust
25
mph
Peak 24h
31
avg 10
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 10 · pk 31 @ 4:00p
−24h−18h−12h−6hnow
A fresh breeze drives the w-bound air across the harbor.
Lyman, WY
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
790.4
+0.5 mb in 3h · steady · 23.34 inHg
Now
790.4
mb
3h
+0.5
mb
12h
-3.5
mb
24h
+0.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 788794
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Lyman, WY
Air quality
68
AQI
Moderate
PM 2.5
8.3 μg/m³
PM 10
22.3 μg/m³
NO₂
0.7 μg/m³
Ozone
117.0 μg/m³
UV Index
0.2 Low
Lyman, WY
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:31 AM
Sunrise
6:01 AM
Daylight
14h 33m
Sunset
8:34 PM
Civil dusk
3:06 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Lyman, WY
The moon
New Moon
0% illuminated
Moonrise
12:08 PM
Moonset
3:10 AM
In sign
♉︎ Taurus
Lyman, WY
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 →

Lyman at a glance

  • Today vs. normal: 13°F below the seasonal normal for this latitude
  • Last frost: April 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

Warm-season window is open

As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.

ZIP codes in Lyman

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.