Old Fort Laramie, WY Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Old Fort Laramie's primary NOAA station, OLD FT LARAMIE.
The climate verdict for Old Fort Laramie
Dryness leads the climate profile for Old Fort Laramie, Wyoming, with 14.9 inches of precipitation a year. NOAA records an annual average of 49°F. At 49/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 18% of scores.
- 49°F
- yearly average temperature, NOAA normal
- 49/100
- comfort score, above 18% of station-mapped location scores
- 14.9"
- annual precipitation · 28" snow
- 135 days
- frost-free growing season
Old Fort Laramie: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00486852 · Old Fort Laramie, WY 49°F mean · 14.9" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 49°F
- RANK-COOL #2,470
- PHOTO-FINISH ≈ Timpanogos Cave
- PRCP-DRY 14.9"
- SWING-MID 45°F
- COMF-LOW 49/100
- LOAD-HEAT 6,448 HDD
- STN-1 USC00486852
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Timpanogos Cave, UT ( -0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every WY station list.
- Old Fort Laramie (this station) 49°F
- Cold Timpanogos Cave, UT 49°F
- Near Lowell, MA 49°F
- Near Shaw, CO 49°F
- Near Sunnyside City…, UT 49°F
Old Fort Laramie sits in Wyoming, the #5 coldest U.S. state at 43.3°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Old Fort Laramie
Old Fort Laramie: 22/100 · grade F
Old Fort Laramie publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Old Fort Laramie, not an official NOAA rating. Rankings still use Comfort Score 49/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 27.5 inches/year | 41/100 · D |
| Annual temperature balance | 49.1°F · 18.4° from 67.5°F | 36/100 · F |
| Precipitation balance | 14.9 in · 20.1 from 35 in | 28/100 · F |
| Frost-free season | 135 days/year | 15/100 · F |
| Normal heat + freeze calendar | 231 calendar days | 1/100 · F |
Old Fort Laramie · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Old Fort Laramie's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 73.8°F
- Coldest month
- 29.0°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Old Fort Laramie sits across the climate record
Three NOAA fields for Old Fort Laramie's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 36th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 83%
- Old Fort Laramie's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 57th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Old Fort Laramie compares across U.S. station-mapped locations
Old Fort Laramie's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
49 18th percentile score exceeds 18% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). This entry sits in this band.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 43°F (6°C) | 15°F (-9°C) | 29°F (-2°C) | 0.2" | 2.2" | 30.1 | 0.0 |
| February | 45°F (7°C) | 17°F (-8°C) | 31°F (-1°C) | 0.5" | 6.3" | 27.0 | 0.0 |
| March | 55°F (13°C) | 24°F (-5°C) | 39°F (4°C) | 0.8" | 3.1" | 27.9 | 0.0 |
| April | 62°F (17°C) | 30°F (-1°C) | 46°F (8°C) | 1.7" | 3.5" | 21.1 | 0.0 |
| May | 71°F (22°C) | 41°F (5°C) | 56°F (13°C) | 2.9" | 0.6" | 6.6 | 0.7 |
| June | 83°F (28°C) | 50°F (10°C) | 66°F (19°C) | 2.2" | 0.0" | 0.4 | 6.8 |
| July | 91°F (33°C) | 57°F (14°C) | 74°F (23°C) | 1.8" | 0.0" | 0.0 | 17.3 |
| August | 89°F (32°C) | 54°F (12°C) | 72°F (22°C) | 1.4" | 0.0" | 0.1 | 14.5 |
| September | 80°F (27°C) | 44°F (7°C) | 62°F (17°C) | 1.4" | 0.0" | 4.4 | 5.1 |
| October | 65°F (18°C) | 31°F (0°C) | 48°F (9°C) | 1.1" | 2.4" | 20.9 | 0.1 |
| November | 52°F (11°C) | 22°F (-5°C) | 37°F (3°C) | 0.5" | 3.2" | 27.9 | 0.0 |
| December | 43°F (6°C) | 15°F (-9°C) | 29°F (-2°C) | 0.4" | 6.2" | 29.7 | 0.0 |
The year, day by day
Old Fort Laramie works both ends of the calendar. Normal highs climb to 92°F by July 24 and hold at or above 90°F on 37 dates, then normal lows drop to freezing or below on 194 dates, bottoming at 14°F around December 26.
When the heat sits
Normal highs reach 90°F from July 8 through August 13, covering 37 dates. The broader mild season, normal highs of 70°F or more, runs May 14 to October 5.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into April 23, then returns to freezing around October 13, covering 194 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 23, when 31% of years recorded at least a hundredth of an inch. The driest is January 14 at 12%. Summed across the calendar, that is about 70 wet dates a year.
The widest day
September 7 carries the biggest normal gap between afternoon and dawn, 36°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Old Fort Laramie.
Where Old Fort Laramie Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 36°F, sharper than nine in ten ranked stations see.
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 194 nights a year, more than most ranked stations.
Old Fort Laramie earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 2.2"
3.5 days with precipitation
Snow: 6.3"
4.6 days with precipitation
Snow: 3.1"
4.9 days with precipitation
Snow: 3.5"
7.3 days with precipitation
Snow: 0.6"
9.8 days with precipitation
7.7 days with precipitation
6.8 days with precipitation
5.7 days with precipitation
5.5 days with precipitation
Snow: 2.4"
5.5 days with precipitation
Snow: 3.2"
4.0 days with precipitation
Snow: 6.2"
4.2 days with precipitation
Old Fort Laramie runs a summer-peaked wet season
36% of Old Fort Laramie's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is May at 2.9", on a 44.8°F seasonal spread. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: May, June, July, taking 46% of the annual total between them.
- Driest month: January at 0.2".
- Winter share: 8% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
How Old Fort Laramie's precipitation splits across the calendar
About 70 days a year record measurable precipitation here, carrying 14.9" between them, or roughly 0.21 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Winter brings real snow to Old Fort Laramie
Old Fort Laramie averages 27.5 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 14 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 27.5 inches of depth.
- Days recording measurable snow: about 14 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 18% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
September 26
50% probability date
Last Spring Freeze
May 14
50% probability date
Growing Season
135 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,448
Higher = more heating needed
Cooling Degree Days
676
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside WY closest to Old Fort Laramie on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (49°F here).
- Arlington, WA 49°F · 0.0°F off
- Byers, CO 49°F · 0.0°F off
- Crystal Lake, IL 49°F · 0.0°F off
- Greenfield, IA 49°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (14.9" here), excluding temperature-peer places.
- Cascade, MT 14.9" · 0.0" off
- Kanab, UT 14.9" · 0.0" off
- Broadus, MT 14.9" · 0.0" off
- Hysham, MT 14.9" · 0.0" off
Snow and freeze rhythm
When cold and snow define Old Fort Laramie
heating led · dry · mid swing
Old Fort Laramie's energy balance leans toward cold weather: 6,448 annual heating degree days against 676 for cooling. Its 44.8°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 135 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
-
1. Old Fort Laramie coldest normal
December
The monthly mean of 29°F (-2°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Old Fort Laramie typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Old Fort Laramie snow peak
February
Old Fort Laramie averages 27.5 inches of snow a year, with February the snowiest month on the normals.
Questions about Old Fort Laramie's climate
How much snow does Old Fort Laramie get? ▼
How many days above 90°F does Old Fort Laramie get? ▼
How much energy does heating and cooling require in Old Fort Laramie? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Old Fort Laramie's primary station: OLD FT LARAMIE (USC00486852). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Old Fort Laramie; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Old Fort Laramie comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.