Williams Fork Dam, CO Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Williams Fork Dam's primary NOAA station, WILLIAMS FORK DAM.
The climate verdict for Williams Fork Dam
Dryness leads the climate profile for Williams Fork Dam, Colorado, with 14.3 inches of precipitation a year. NOAA records an annual average of 38°F. At 34/100 (below average) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 2% of scores.
- 38°F
- annual average temperature (NOAA normal)
- 34/100
- comfort score, above 2% of station-mapped location scores
- 14.3"
- annual precipitation · 81" snow
- 90 days
- growing season, frost-free days
Williams Fork Dam: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00059096 · Williams Fork Dam, CO 38°F mean · 14.3" precip
TEMP-COLD · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COLD 38°F
- RANK-COOL #206
- PHOTO-FINISH ≈ Warren
- PRCP-DRY 14.3"
- SWING-WIDE 49°F
- COMF-LOW 34/100
- LOAD-HEAT 9,756 HDD
- STN-1 USC00059096
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Warren, ID (+ 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 CO station list.
- Williams Fork D… (this station) 38°F
- Cold Pahaska, WY 38°F
- Hot Warren, ID 38°F
- Near Telluride, CO 38°F
- Near Monashka Creek…, AK 38°F
Climate Living Index · Williams Fork Dam
Williams Fork Dam: 5/100 · grade F
Williams Fork Dam publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Williams Fork Dam, not an official NOAA rating. Rankings still use Comfort Score 34/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 14.3 in · 20.8 from 35 in | 25/100 · F |
| Snowfall burden | 81.2 inches/year | 6/100 · F |
| Annual temperature balance | 38.2°F · 29.3° from 67.5°F | 0/100 · F |
| Frost-free season | 90 days/year | 0/100 · F |
| Normal heat + freeze calendar | 235 calendar days | 0/100 · F |
Williams Fork Dam · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Williams Fork Dam is a continental Köppen climate: Dfb
Coldest-month mean 13.0°F and warmest-month mean 61.9°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 61.9°F
- Coldest month
- 13.0°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 Williams Fork Dam sits across the climate record
Three NOAA fields for Williams Fork Dam's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 97%
- Among 6,861 stations, Williams Fork Dam sits in the cooler third of annual means.
- Annual precipitation
- Drier than 85%
- Williams Fork Dam'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 Williams Fork Dam is large versus 6,861 complete station-years.
How Williams Fork Dam compares across U.S. station-mapped locations
Williams Fork Dam's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
34 2nd percentile score exceeds 2% 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
Williams Fork Dam's measured station temperature trend
MethodologyAcross 35 complete annual observations from 1983 to 2025, WILLIAMS FORK DAM warmed at a fitted rate of 0.34°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Williams Fork Dam primary station fitted change +0.34 °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 | 26°F (-3°C) | 0°F (-18°C) | 13°F (-11°C) | 1.0" | 14.2" | 31.0 | 0.0 |
| February | 31°F (0°C) | 4°F (-16°C) | 17°F (-8°C) | 0.9" | 13.6" | 27.9 | 0.0 |
| March | 42°F (6°C) | 15°F (-10°C) | 29°F (-2°C) | 1.0" | 10.4" | 30.8 | 0.0 |
| April | 52°F (11°C) | 24°F (-5°C) | 38°F (3°C) | 1.5" | 11.9" | 28.4 | 0.0 |
| May | 62°F (17°C) | 32°F (0°C) | 47°F (8°C) | 1.5" | 2.7" | 18.6 | 0.0 |
| June | 73°F (23°C) | 38°F (4°C) | 56°F (13°C) | 1.0" | 0.1" | 4.4 | 0.0 |
| July | 79°F (26°C) | 45°F (7°C) | 62°F (17°C) | 1.4" | 0.0" | 0.3 | 0.3 |
| August | 77°F (25°C) | 43°F (6°C) | 60°F (16°C) | 1.4" | 0.0" | 0.5 | 0.1 |
| September | 70°F (21°C) | 35°F (2°C) | 53°F (11°C) | 1.4" | 0.3" | 12.2 | 0.0 |
| October | 57°F (14°C) | 25°F (-4°C) | 41°F (5°C) | 1.3" | 4.8" | 27.2 | 0.0 |
| November | 41°F (5°C) | 15°F (-10°C) | 28°F (-2°C) | 0.9" | 9.9" | 29.7 | 0.0 |
| December | 28°F (-2°C) | 4°F (-16°C) | 16°F (-9°C) | 0.9" | 13.3" | 31.0 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 80°F around July 19, short of 90°F on every date, while 235 dates carry a normal low at or below freezing, the coldest 0°F near January 6.
The freezing stretch
The normal low stays at or below 32°F into May 16, then returns to freezing around September 25, covering 235 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 August 2, when 34% of years recorded at least a hundredth of an inch. The driest is October 14 at 23%. Summed across the calendar, that is about 108 wet dates a year.
The widest day
June 27 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 Williams Fork Dam.
Where Williams Fork Dam Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 235 nights a year, placing this among the most frost-prone tenth of ranked stations.
A drier-than-most normal water year — around 14 inches, below what four out of five ranked stations collect.
Williams Fork Dam 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: 14.2"
10.1 days with precipitation
Snow: 13.6"
9.9 days with precipitation
Snow: 10.4"
8.0 days with precipitation
Snow: 11.9"
9.8 days with precipitation
Snow: 2.7"
9.7 days with precipitation
Snow: 0.1"
6.8 days with precipitation
9.4 days with precipitation
10.3 days with precipitation
Snow: 0.3"
8.3 days with precipitation
Snow: 4.8"
7.5 days with precipitation
Snow: 9.9"
8.4 days with precipitation
Snow: 13.3"
9.1 days with precipitation
Williams Fork Dam spreads its precipitation across the year
Neither half of the year dominates here: June through August take 27% of the annual total and December through February 20%, with neither reaching the 35% that would mark a distinct wet season. Williams Fork Dam has no dry season to plan around, though it does carry a wide 48.9°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: May averages 1.5" and December 0.9". The three wettest months together take 31% 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.
Williams Fork Dam is dry, and what does fall arrives gently
Only about 107 days a year record measurable precipitation here, 29% of the calendar, and they carry 14.3" between them. At roughly 0.13 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 August at about 10 wet days; the driest is June at about 7.
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 Williams Fork Dam
Williams Fork Dam averages 81.2 inches of snowfall a year, with January the snowiest month on the normals, spread across roughly 43 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: 81.2 inches of depth.
- Days recording measurable snow: about 43 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 57% 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 10
50% probability date
Last Spring Freeze
June 12
50% probability date
Growing Season
90 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
9,756
Higher = more heating needed
Cooling Degree Days
18
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CO closest to Williams Fork Dam 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 (38°F here).
- Northome, MN 38°F · 0.0°F off
- Powers Lake, ND 38°F · 0.0°F off
- Fortuna, ND 38°F · 0.1°F off
- Mohall, ND 38°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (14.3" here), excluding temperature-peer places.
- Vida, MT 14.2" · 0.0" off
- Lance Creek, WY 14.3" · 0.0" off
- Redstone, MT 14.3" · 0.0" off
- Ryegate, MT 14.3" · 0.0" off
Snow and freeze rhythm
When cold and snow define Williams Fork Dam
heating led · dry · mid swing
Williams Fork Dam's energy balance leans toward cold weather: 9,756 annual heating degree days against 18 for cooling. Its 48.9°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 90 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. Williams Fork Dam coldest normal
January
Averaging 13°F (-11°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Williams Fork Dam typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Williams Fork Dam snow peak
January
Williams Fork Dam averages 81.2 inches of snow a year, with January the snowiest month on the normals.
Questions about Williams Fork Dam's climate
How much snow does Williams Fork Dam get? ▼
How cold does Williams Fork Dam get in winter? ▼
How much energy does heating and cooling require in Williams Fork Dam? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Williams Fork Dam's primary station: WILLIAMS FORK DAM (USC00059096). 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 Williams Fork Dam; 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 Williams Fork Dam 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.