Story, Wyoming climate: Normal weather by month, frost dates and records
Story's normal year runs from 14°F February nights to 81°F July afternoons, with 27.7 inches of precipitation and 138 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.4°C, February lows of −10°C, July highs of 27°C, 703 mm of precipitation a year.
- NOAA stationStory
- Station IDUSC00488626
- Location44.58°N 106.91°W
- Elevation5,168 ft (1,575 m)
- From the centerunder 1 mile
- Population (census place)1,174
On October 23, the normal high in Story is 54°F and the normal low 29°F, and the chance of measurable rain or snow is 31%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Story.
- Jan 38° 15°
- Feb 37° 14°
- Mar 45° 21°
- Apr 53° 29°
- May 60° 38°
- Jun 70° 45°
- Jul 81° 53°
- Aug 80° 51°
- Sep 70° 42°
- Oct 56° 31°
- Nov 45° 22°
- Dec 37° 14°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Story each month?
July is the warmest month, with normal highs of 81°F; February the coldest, with normal lows of 14°F. The most precipitation falls in May (4.67 in), the least in August (1.25 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 15°F | 26.5°F | 1.29 | 18.2 | 9 | <1 | 30 | 9 h 10 min |
| February | 37°F | 14°F | 25.6°F | 1.45 | 18.5 | 10 | <1 | 27 | 10 h 30 min |
| March | 45°F | 21°F | 32.6°F | 2.34 | 22.9 | 10 | <1 | 28 | 11 h 50 min |
| April | 53°F | 29°F | 40.5°F | 3.74 | 24.2 | 13 | <1 | 22 | 13 h 30 min |
| May | 60°F | 38°F | 48.8°F | 4.67 | 4.9 | 13 | <1 | 10 | 14 h 50 min |
| June | 70°F | 45°F | 57.9°F | 2.82 | 0.3 | 12 | 1 | 1 | 15 h 30 min |
| July | 81°F | 53°F | 66.6°F | 1.64 | 0.0 | 9 | 3 | <1 | 15 h 20 min |
| August | 80°F | 51°F | 65.2°F | 1.25 | 0.0 | 8 | 2 | <1 | 14 h 10 min |
| September | 70°F | 42°F | 55.9°F | 2.26 | 2.2 | 8 | <1 | 2 | 12 h 40 min |
| October | 56°F | 31°F | 43.7°F | 3.32 | 13.0 | 10 | <1 | 17 | 11 h |
| November | 45°F | 22°F | 33.5°F | 1.54 | 16.3 | 8 | <1 | 26 | 9 h 40 min |
| December | 37°F | 14°F | 25.6°F | 1.34 | 17.8 | 8 | <1 | 30 | 8 h 50 min |
| Year (annual) | 56°F | 31°F | 43.5°F | 27.66 | 138.3 | 118 | 6 | 193 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −10°C | −3.1°C | 33 mm | 46 cm |
| February | 3°C | −10°C | −3.6°C | 37 mm | 47 cm |
| March | 7°C | −6°C | 0.3°C | 59 mm | 58 cm |
| April | 11°C | −2°C | 4.7°C | 95 mm | 61 cm |
| May | 16°C | 3°C | 9.3°C | 119 mm | 12 cm |
| June | 21°C | 7°C | 14.4°C | 72 mm | 1 cm |
| July | 27°C | 11°C | 19.2°C | 42 mm | 0 cm |
| August | 27°C | 10°C | 18.4°C | 32 mm | 0 cm |
| September | 21°C | 5°C | 13.3°C | 57 mm | 6 cm |
| October | 13°C | 0°C | 6.5°C | 84 mm | 33 cm |
| November | 7°C | −6°C | 0.8°C | 39 mm | 41 cm |
| December | 3°C | −10°C | −3.6°C | 34 mm | 45 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00488626; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Story?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, September has the fewest days with rain (8).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00488626.
When is the last frost in Story?
In Story, the last spring frost (32°F) comes after May 24 in half of years and after June 9 in one year in ten; the first autumn frost comes before September 23 in half of years and before September 8 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 241 year in 10 after June 9; 9 in 10 after May 10
- First autumn frost, half of years before
- September 231 year in 10 before September 8; 9 in 10 before October 7
NOAA puts the median frost-free season at 120 days, and the season without a hard freeze (28°F) at 146 days.
A hard freeze (28°F) comes after May 8 in half of springs and before October 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Story in zone 5a in ZIP code 82842. By the map's own method, the average of each year's coldest night over 1991-2020, Story's NOAA station is in zone 5a: the coldest night of a typical year reaches −19°F (15 complete years).
Frost dates for every NOAA station in Wyoming · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00488626; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Story?
In a normal year in Story, 6 days a year reach 90°F, 193 nights fall to 32°F or colder and 118 days bring measurable precipitation.
- Days at 90°F or more
- 6a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 193a normal year
- Days that stay below freezing
- 47high of 32°F or less
- Days with 0.01 inch of precipitation
- 118a normal year
- Days with 1 inch of snow or more
- 38a normal year
The highest temperature in this station's record (since 2000) is 100°F, on June 16, 2021; the lowest is −35°F, on January 13, 2024.
The wettest calendar year on that record is 2023, with 36.40 in; the snowiest season is 1996–97, with 212.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00488626; records: ACIS (NOAA Regional Climate Centers), station USC00488626. Records use complete months only; a month missing more than three days is left out.
How sunny is Story?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Story, 4.3 kWh per square metre a day. July is the sunniest month (86%) and April the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 1.9 |
| February | 73% | 2.8 |
| March | 72% | 4.0 |
| April | 70% | 5.0 |
| May | 72% | 5.9 |
| June | 80% | 7.0 |
| July | 86% | 7.2 |
| August | 85% | 6.1 |
| September | 82% | 4.8 |
| October | 75% | 3.1 |
| November | 73% | 2.1 |
| December | 70% | 1.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Story need?
A normal year in Story brings 8,014 heating degree days, 49% more than the median U.S. place (5,373), and 225 cooling degree days, 75% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,648 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,195 | 0 |
| February | 1,103 | 0 |
| March | 1,003 | 0 |
| April | 735 | 0 |
| May | 502 | 1 |
| June | 231 | 18 |
| July | 50 | 101 |
| August | 80 | 87 |
| September | 291 | 18 |
| October | 659 | 1 |
| November | 944 | 0 |
| December | 1,221 | 0 |
| Year (annual) | 8,014 | 225 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00488626. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Story been warmer than normal lately?
2025 averaged 45.4°F, 1.9°F above the 1991-2020 normal of 43.5°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 45.0°F | +1.5°F | 21.44 | 140.3 |
| 2022 | 43.4°F | −0.1°F | 24.43 | – |
| 2023 | 44.4°F | +0.9°F | 36.40 | 140.3 |
| 2024 | 46.8°F | +3.3°F | 18.31 | 80.4 |
| 2025 | 45.4°F | +1.9°F | 31.02 | – |
Source: observed years: ACIS, station USC00488626. A year counts only with all twelve months complete.
How does Story's climate compare?
Story is warmer than 27 of the other 70 places with their own NOAA record in Wyoming, and wetter than 62. Across the 7,247 U.S. stations with normals, its annual mean of 43.5°F is warmer than 14%.
In the Köppen classification computed from these normals, Story is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Story's climate
What is the coldest month in Story?
February, with a normal high of 37°F and a normal low of 14°F. The warmest is July (81°F by day, 53°F at night).
Does it snow in Story?
Yes: 138 inches in a normal year, falling on 58 days with 0.1 inch or more, the most in April (24.2 inches).
What is the rainiest month in Story?
May, with 4.67 in of precipitation in a normal year; the driest is August with 1.25 in.
What plant hardiness zone is Story in?
The USDA's 2023 map puts Story in zone 5a in ZIP code 82842. By the same method at Story's NOAA station, the coldest night of a typical year reaches −19°F (15 years, 1991-2020): zone 5a.
How late can frost come in Story?
In half of years the last 32°F night comes after May 24; in one year in ten it comes after June 9. Waiting until June 9 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wyoming climateThe statewide normals and every place in the state
- Big Horn, WY9 miles from this station, 45.5°F a year
- Sheridan, WY14 miles from this station, 45.4°F a year
- Buffalo, WY16 miles from this station, 46.4°F a year
- Clearmont, WY22 miles from this station, 43.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made