Glendo, WY Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Glendo's primary NOAA station, GLENDO 6NE.
The climate verdict for Glendo
Dryness leads the climate profile for Glendo, Wyoming, with 13.4 inches of precipitation a year. NOAA records an annual average of 45°F. At 39/100 (below average) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 4% of scores.
- 45°F
- average temperature, NOAA 1991-2020 normal
- 39/100
- comfort score, above 4% of station-mapped location scores
- 13.4"
- annual precipitation · 44" snow
- 113 days
- growing season, frost-free days
Glendo: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00483936 · Glendo, WY 45°F mean · 13.4" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 45°F
- RANK-COOL #1,235
- PHOTO-FINISH ≈ Green Bay Botan…
- PRCP-DRY 13.4"
- SWING-WIDE 49°F
- COMF-LOW 39/100
- LOAD-HEAT 7,775 HDD
- STN-1 USC00483936
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Green Bay Botanical, 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.
- Glendo (this station) 45°F
- Hot Sonnette, MT 45°F
- Near Green Bay Botan…, WI 45°F
- Near Denmark Wwtp, WI 45°F
- Near Hartford Wwtp, WI 45°F
Glendo 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 · Glendo
Glendo: 15/100 · grade F
Glendo publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Glendo, not an official NOAA rating. Rankings still use Comfort Score 39/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 43.8 inches/year | 24/100 · F |
| Precipitation balance | 13.4 in · 21.6 from 35 in | 23/100 · F |
| Annual temperature balance | 44.7°F · 22.8° from 67.5°F | 19/100 · F |
| Normal heat + freeze calendar | 213 calendar days | 8/100 · F |
| Frost-free season | 113 days/year | 4/100 · F |
Glendo · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Glendo'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
- 70.5°F
- Coldest month
- 22.0°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 Glendo sits across the climate record
Three NOAA fields for Glendo's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 82%
- Among 6,861 stations, Glendo sits in the cooler third of annual means.
- Annual precipitation
- Drier than 86%
- Glendo's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 75%
- Warmest-to-coldest month gap for Glendo is large versus 6,861 complete station-years.
How Glendo compares across U.S. station-mapped locations
Glendo's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
39 4th percentile score exceeds 4% 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%). This entry sits in this band.
- 40–50: 1,113 station-mapped locations (18%). Above this entry.
- 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 | 37°F (3°C) | 7°F (-14°C) | 22°F (-6°C) | 0.3" | 5.1" | 30.7 | 0.0 |
| February | 40°F (4°C) | 11°F (-12°C) | 25°F (-4°C) | 0.4" | 7.8" | 27.7 | 0.0 |
| March | 50°F (10°C) | 20°F (-6°C) | 35°F (2°C) | 0.9" | 7.4" | 28.5 | 0.0 |
| April | 58°F (15°C) | 27°F (-3°C) | 43°F (6°C) | 1.5" | 4.7" | 22.1 | 0.0 |
| May | 67°F (20°C) | 38°F (3°C) | 53°F (11°C) | 3.2" | 2.3" | 7.9 | 0.2 |
| June | 79°F (26°C) | 47°F (8°C) | 63°F (17°C) | 1.6" | 0.0" | 0.8 | 5.1 |
| July | 87°F (31°C) | 54°F (12°C) | 71°F (21°C) | 1.4" | 0.0" | 0.0 | 15.5 |
| August | 87°F (30°C) | 51°F (10°C) | 69°F (20°C) | 1.2" | 0.0" | 0.0 | 12.9 |
| September | 77°F (25°C) | 40°F (4°C) | 58°F (14°C) | 0.8" | 0.0" | 5.4 | 3.9 |
| October | 62°F (16°C) | 27°F (-3°C) | 44°F (7°C) | 1.1" | 3.5" | 21.5 | 0.0 |
| November | 48°F (9°C) | 16°F (-9°C) | 32°F (0°C) | 0.6" | 5.9" | 28.5 | 0.0 |
| December | 38°F (3°C) | 6°F (-14°C) | 22°F (-6°C) | 0.4" | 7.1" | 30.7 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 89°F around July 27, short of 90°F on every date, while 213 dates carry a normal low at or below freezing, the coldest 4°F near December 24.
The freezing stretch
The normal low stays at or below 32°F into May 4, then returns to freezing around October 5, covering 213 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 21, when 31% of years recorded at least a hundredth of an inch. The driest is November 21 at 11%. Summed across the calendar, that is about 63 wet dates a year.
The widest day
September 4 carries the biggest normal gap between afternoon and dawn, 38°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Glendo.
Where Glendo Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 213 nights a year, placing this among the most frost-prone tenth of ranked stations.
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 38°F, sharper than nine in ten ranked stations see.
Glendo 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: 5.1"
3.9 days with precipitation
Snow: 7.8"
4.9 days with precipitation
Snow: 7.4"
5.2 days with precipitation
Snow: 4.7"
7.0 days with precipitation
Snow: 2.3"
10.0 days with precipitation
6.1 days with precipitation
4.7 days with precipitation
5.0 days with precipitation
3.4 days with precipitation
Snow: 3.5"
4.7 days with precipitation
Snow: 5.9"
3.4 days with precipitation
Snow: 7.1"
4.5 days with precipitation
Glendo 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 8%, with neither reaching the 35% that would mark a distinct wet season. Glendo has no dry season to plan around, though it does carry a wide 48.5°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: May averages 3.2" and January 0.3". The three wettest months together take 47% 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.
How Glendo's precipitation splits across the calendar
About 63 days a year record measurable precipitation here, carrying 13.4" 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 Glendo
Glendo averages 43.8 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 27 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: 43.8 inches of depth.
- Days recording measurable snow: about 27 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 33% 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 15
50% probability date
Last Spring Freeze
May 25
50% probability date
Growing Season
113 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,775
Higher = more heating needed
Cooling Degree Days
417
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside WY closest to Glendo 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 (45°F here).
- Arlington, SD 45°F · 0.0°F off
- Buena Vista, CO 45°F · 0.0°F off
- Canby, MN 45°F · 0.0°F off
- Evergreen, CO 45°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (13.4" here), excluding temperature-peer places.
- Briggsdale, CO 13.4" · 0.0" off
- Chinook, MT 13.4" · 0.0" off
- Glasgow, MT 13.4" · 0.0" off
- Stockton, CA 13.4" · 0.0" off
Snow and freeze rhythm
When cold and snow define Glendo
heating led · dry · mid swing
Glendo's energy balance leans toward cold weather: 7,775 annual heating degree days against 417 for cooling. Its 48.5°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 113 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. Glendo coldest normal
January
Averaging 22°F (-6°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Glendo typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Glendo snow peak
February
Glendo averages 43.8 inches of snow a year, with February the snowiest month on the normals.
Questions about Glendo's climate
How much snow does Glendo get? ▼
How many days above 90°F does Glendo get? ▼
How much energy does heating and cooling require in Glendo? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Glendo's primary station: GLENDO 6NE (USC00483936). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 5632290). Match rule for Glendo: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Glendo 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.