Weather Almanac: Yellowstone National Park, WY 82190

🗓️ Historical norms for May 2026

May avg. precipitation
🌧️ 2.27"
May days below freezing
📉 ≈22.7 days
Average May lows ≈28.4°F
USDA Zone
4b
Annual extreme lows -25°F to -20°F
Last Spring Frost (36°F)
🌷 Always
First Fall Frost (36°F)
🍂 Always
Fri. May 1 🌕

🌅 6:12 a.m.

H: ≈47.2°F

L: ≈24.3°F

🌇 8:26 p.m.

Sat. May 2  

🌅 6:10 a.m.

H: ≈47.4°F

L: ≈24.6°F

🌇 8:28 p.m.

Sun. May 3  

🌅 6:09 a.m.

H: ≈47.7°F

L: ≈25.0°F

🌇 8:29 p.m.

Mon. May 4  

🌅 6:07 a.m.

H: ≈48.0°F

L: ≈25.3°F

🌇 8:30 p.m.

Tue. May 5  

🌅 6:06 a.m.

H: ≈48.2°F

L: ≈25.6°F

🌇 8:31 p.m.

Wed. May 6  

🌅 6:05 a.m.

H: ≈48.5°F

L: ≈25.9°F

🌇 8:32 p.m.

Thu. May 7  

🌅 6:03 a.m.

H: ≈48.8°F

L: ≈26.2°F

🌇 8:34 p.m.

Fri. May 8  

🌅 6:02 a.m.

H: ≈49.1°F

L: ≈26.5°F

🌇 8:35 p.m.

Sat. May 9 🌗

🌅 6:01 a.m.

H: ≈49.3°F

L: ≈26.8°F

🌇 8:36 p.m.

Sun. May 10  

🌅 5:59 a.m.

H: ≈49.6°F

L: ≈27.1°F

🌇 8:37 p.m.

Mon. May 11  

🌅 5:58 a.m.

H: ≈49.9°F

L: ≈27.4°F

🌇 8:38 p.m.

Tue. May 12  

🌅 5:57 a.m.

H: ≈50.2°F

L: ≈27.6°F

🌇 8:39 p.m.

Wed. May 13  

🌅 5:56 a.m.

H: ≈50.5°F

L: ≈27.9°F

🌇 8:41 p.m.

Thu. May 14 Ascension  

🌅 5:55 a.m.

H: ≈50.8°F

L: ≈28.2°F

🌇 8:42 p.m.

Fri. May 15  

🌅 5:54 a.m.

H: ≈51.1°F

L: ≈28.4°F

🌇 8:43 p.m.

Sat. May 16 🌑

🌅 5:53 a.m.

H: ≈51.4°F

L: ≈28.6°F

🌇 8:44 p.m.

Sun. May 17  

🌅 5:52 a.m.

H: ≈51.7°F

L: ≈28.9°F

🌇 8:45 p.m.

Mon. May 18  

🌅 5:50 a.m.

H: ≈52.0°F

L: ≈29.1°F

🌇 8:46 p.m.

Tue. May 19  

🌅 5:49 a.m.

H: ≈52.3°F

L: ≈29.3°F

🌇 8:47 p.m.

Wed. May 20  

🌅 5:49 a.m.

H: ≈52.6°F

L: ≈29.6°F

🌇 8:48 p.m.

Thu. May 21  

🌅 5:48 a.m.

H: ≈52.9°F

L: ≈29.8°F

🌇 8:49 p.m.

Fri. May 22  

🌅 5:47 a.m.

H: ≈53.2°F

L: ≈30.0°F

🌇 8:50 p.m.

Sat. May 23 🌓

🌅 5:46 a.m.

H: ≈53.5°F

L: ≈30.2°F

🌇 8:51 p.m.

Sun. May 24 Pentecost  

🌅 5:45 a.m.

H: ≈53.9°F

L: ≈30.4°F

🌇 8:52 p.m.

Mon. May 25 Memorial Day  

🌅 5:44 a.m.

H: ≈54.2°F

L: ≈30.6°F

🌇 8:53 p.m.

Tue. May 26  

🌅 5:43 a.m.

H: ≈54.5°F

L: ≈30.8°F

🌇 8:54 p.m.

Wed. May 27  

🌅 5:43 a.m.

H: ≈54.9°F

L: ≈31.0°F

🌇 8:55 p.m.

Thu. May 28  

🌅 5:42 a.m.

H: ≈55.2°F

L: ≈31.1°F

🌇 8:56 p.m.

Fri. May 29  

🌅 5:41 a.m.

H: ≈55.6°F

L: ≈31.3°F

🌇 8:57 p.m.

Sat. May 30  

🌅 5:41 a.m.

H: ≈55.9°F

L: ≈31.5°F

🌇 8:58 p.m.

Sun. May 31 🌕

🌅 5:40 a.m.

H: ≈56.3°F

L: ≈31.7°F

🌇 8:59 p.m.


Temperature climatic data from weather station: YELLOWSTONE LAKE (USW00094173)

Precipitation climatic data from weather station: YELLOWSTONE LAKE (USW00094173)

Agricultural climatic data from weather station: LAKE YELLOWSTONE (USC00485345)