Leiter, WY Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Leiter's primary NOAA station, LEITER 9N.
The climate verdict for Leiter
Dryness leads the climate profile for Leiter, Wyoming, with 15.6 inches of precipitation a year. NOAA records an annual average of 47°F. At 44/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 10% of scores.
- 47°F
- average temperature, NOAA 1991-2020 normal
- 44/100
- comfort score, above 10% of station-mapped location scores
- 15.6"
- annual precipitation · 53" snow
- 139 days
- frost-free growing season
Leiter: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00485506 · Leiter, WY 47°F mean · 15.6" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 47°F
- RANK-COOL #1,784
- PHOTO-FINISH ≈ Dodge
- PRCP-DRY 15.6"
- SWING-WIDE 49°F
- COMF-LOW 44/100
- LOAD-HEAT 7,230 HDD
- STN-1 USC00485506
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Dodge, WI (+ 0 °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.
- Leiter (this station) 47°F
- Cold Platteville, WI 47°F
- Hot Porcupine, SD 47°F
- Near Dodge, WI 47°F
- Near Forsyth, MT 47°F
Leiter 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 · Leiter
Leiter: 22/100 · grade F
Leiter publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Leiter, not an official NOAA rating. Rankings still use Comfort Score 44/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 15.6 in · 19.4 from 35 in | 30/100 · F |
| Annual temperature balance | 46.8°F · 20.7° from 67.5°F | 26/100 · F |
| Snowfall burden | 53.4 inches/year | 19/100 · F |
| Frost-free season | 139 days/year | 18/100 · F |
| Normal heat + freeze calendar | 197 calendar days | 16/100 · F |
Leiter · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Leiter is a continental Köppen climate: Dfa
Coldest-month mean 24.2°F and warmest-month mean 73.0°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 73.0°F
- Coldest month
- 24.2°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 Leiter sits across the climate record
Three NOAA fields for Leiter's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 74%
- Among 6,861 stations, Leiter sits in the cooler third of annual means.
- Annual precipitation
- Drier than 81%
- Leiter's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 77%
- Warmest-to-coldest month gap for Leiter is large versus 6,861 complete station-years.
How Leiter compares across U.S. station-mapped locations
Leiter's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 10th percentile score exceeds 10% 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
Leiter's measured station temperature trend
MethodologyAcross 50 complete annual observations from 1965 to 2025, LEITER 9N warmed at a fitted rate of 0.18°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Leiter primary station fitted change +0.18 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 35°F (2°C) | 14°F (-10°C) | 24°F (-4°C) | 0.6" | 9.1" | 30.0 | 0.0 |
| February | 37°F (3°C) | 16°F (-9°C) | 27°F (-3°C) | 0.5" | 7.7" | 26.5 | 0.0 |
| March | 49°F (10°C) | 24°F (-4°C) | 37°F (3°C) | 1.0" | 8.6" | 24.8 | 0.0 |
| April | 57°F (14°C) | 32°F (0°C) | 45°F (7°C) | 1.8" | 7.7" | 15.0 | 0.0 |
| May | 67°F (19°C) | 41°F (5°C) | 54°F (12°C) | 2.7" | 1.2" | 4.1 | 0.2 |
| June | 78°F (26°C) | 50°F (10°C) | 64°F (18°C) | 2.3" | 0.0" | 0.0 | 4.0 |
| July | 89°F (32°C) | 57°F (14°C) | 73°F (23°C) | 1.7" | 0.0" | 0.0 | 15.5 |
| August | 88°F (31°C) | 56°F (13°C) | 72°F (22°C) | 0.8" | 0.0" | 0.0 | 15.1 |
| September | 77°F (25°C) | 46°F (8°C) | 62°F (16°C) | 1.3" | 0.4" | 1.2 | 4.3 |
| October | 60°F (15°C) | 34°F (1°C) | 47°F (8°C) | 1.6" | 4.2" | 11.1 | 0.1 |
| November | 46°F (8°C) | 23°F (-5°C) | 34°F (1°C) | 0.7" | 6.4" | 24.8 | 0.0 |
| December | 35°F (2°C) | 14°F (-10°C) | 25°F (-4°C) | 0.6" | 8.1" | 30.0 | 0.0 |
The year, day by day
Leiter works both ends of the calendar. Normal highs climb to 91°F by July 26 and hold at or above 90°F on 17 dates, then normal lows drop to freezing or below on 180 dates, bottoming at 13°F around December 24.
When the heat sits
Normal highs reach 90°F from July 19 through August 4, covering 17 dates. The broader mild season, normal highs of 70°F or more, runs May 25 to September 27.
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 17, then returns to freezing around October 21, covering 180 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 16, when 32% of years recorded at least a hundredth of an inch. The driest is August 24 at 15%. Summed across the calendar, that is about 87 wet dates a year.
The widest day
August 30 carries the biggest normal gap between afternoon and dawn, 32°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Leiter.
Where Leiter Stands Nationally
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 180 nights a year, more than most ranked stations.
A drier-than-most normal water year — around 16 inches, below what four out of five ranked stations collect.
Leiter 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: 9.1"
7.2 days with precipitation
Snow: 7.7"
6.4 days with precipitation
Snow: 8.6"
8.2 days with precipitation
Snow: 7.7"
9.2 days with precipitation
Snow: 1.2"
9.8 days with precipitation
8.6 days with precipitation
7.0 days with precipitation
4.5 days with precipitation
Snow: 0.4"
5.4 days with precipitation
Snow: 4.2"
8.0 days with precipitation
Snow: 6.4"
6.2 days with precipitation
Snow: 8.1"
6.4 days with precipitation
Leiter spreads its precipitation across the year
Neither half of the year dominates here: June through August take 31% of the annual total and December through February 10%, with neither reaching the 35% that would mark a distinct wet season. Leiter has no dry season to plan around, though it does carry a wide 48.8°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: May averages 2.7" and February 0.5". The three wettest months together take 44% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Leiter is dry, and what does fall arrives gently
Only about 87 days a year record measurable precipitation here, 24% of the calendar, and they carry 15.6" between them. At roughly 0.18 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is May at about 10 wet days; the driest is August at about 5.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Winter brings real snow to Leiter
Leiter averages 53.4 inches of snowfall a year, with January the snowiest month on the normals, spread across roughly 36 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: 53.4 inches of depth.
- Days recording measurable snow: about 36 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 34% 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 30
50% probability date
Last Spring Freeze
May 14
50% probability date
Growing Season
139 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,230
Higher = more heating needed
Cooling Degree Days
646
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside WY closest to Leiter 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 (47°F here).
- Bigfork, MT 47°F · 0.0°F off
- Chamberlain, SD 47°F · 0.0°F off
- Dakota City, IA 47°F · 0.0°F off
- Dodge, WI 47°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (15.6" here), excluding temperature-peer places.
- Columbus, MT 15.5" · 0.0" off
- Salt Lake City, UT 15.5" · 0.0" off
- Augusta, MT 15.5" · 0.0" off
- Fort Davis, TX 15.5" · 0.0" off
Snow and freeze rhythm
When cold and snow define Leiter
heating led · dry · mid swing
Leiter's energy balance leans toward cold weather: 7,230 annual heating degree days against 646 for cooling. Its 48.8°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 139 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. Leiter coldest normal
January
Averaging 24°F (-4°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Leiter typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Leiter snow peak
January
Leiter averages 53.4 inches of snow a year, with January the snowiest month on the normals.
Questions about Leiter's climate
How much snow does Leiter get? ▼
How many days above 90°F does Leiter get? ▼
How much energy does heating and cooling require in Leiter? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Leiter's primary station: LEITER 9N (USC00485506). 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 Leiter; 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 Leiter 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.