Webster Dam, Kansas climate: Climate normals at a NOAA weather station
Webster Dam's normal year runs from 16°F January nights to 94°F July afternoons, with 25.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.2°C, January lows of −9°C, July highs of 34°C, 645 mm of precipitation a year.
- NOAA stationWebster Dam
- Station IDUSC00148648
- Location39.40°N 99.42°W
- Elevation1,863 ft (568 m)
On October 23, the normal high in Webster Dam is 67°F and the normal low 36°F, and the chance of measurable rain or snow is 12%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Webster Dam.
- Jan 43° 16°
- Feb 47° 18°
- Mar 59° 27°
- Apr 68° 37°
- May 77° 48°
- Jun 88° 59°
- Jul 94° 64°
- Aug 91° 62°
- Sep 84° 53°
- Oct 70° 39°
- Nov 57° 27°
- Dec 45° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Webster Dam each month?
July is the warmest month, with normal highs of 94°F; January the coldest, with normal lows of 16°F. The most precipitation falls in May (4.31 in), the least in January (0.61 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 43°F | 16°F | 29.5°F | 0.61 | 2 | <1 | 31 | 9 h 40 min |
| February | 47°F | 18°F | 32.6°F | 0.65 | 3 | <1 | 26 | 10 h 40 min |
| March | 59°F | 27°F | 43.1°F | 1.26 | 4 | <1 | 22 | 11 h 50 min |
| April | 68°F | 37°F | 52.5°F | 2.21 | 6 | 1 | 10 | 13 h 10 min |
| May | 77°F | 48°F | 62.7°F | 4.31 | 9 | 5 | 1 | 14 h 20 min |
| June | 88°F | 59°F | 73.6°F | 3.15 | 8 | 15 | <1 | 15 h |
| July | 94°F | 64°F | 79.0°F | 3.85 | 8 | 23 | <1 | 14 h 40 min |
| August | 91°F | 62°F | 76.7°F | 3.54 | 7 | 19 | <1 | 13 h 50 min |
| September | 84°F | 53°F | 68.3°F | 2.29 | 5 | 10 | <1 | 12 h 30 min |
| October | 70°F | 39°F | 54.7°F | 1.65 | 4 | 2 | 7 | 11 h 10 min |
| November | 57°F | 27°F | 41.9°F | 1.01 | 3 | <1 | 22 | 10 h |
| December | 45°F | 20°F | 32.1°F | 0.85 | 2 | <1 | 29 | 9 h 20 min |
| Year (annual) | 69°F | 39°F | 53.9°F | 25.38 | 61 | 74 | 147 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 6°C | −9°C | −1.4°C | 15 mm |
| February | 8°C | −8°C | 0.3°C | 17 mm |
| March | 15°C | −3°C | 6.2°C | 32 mm |
| April | 20°C | 3°C | 11.4°C | 56 mm |
| May | 25°C | 9°C | 17.1°C | 109 mm |
| June | 31°C | 15°C | 23.1°C | 80 mm |
| July | 34°C | 18°C | 26.1°C | 98 mm |
| August | 33°C | 17°C | 24.8°C | 90 mm |
| September | 29°C | 12°C | 20.2°C | 58 mm |
| October | 21°C | 4°C | 12.6°C | 42 mm |
| November | 14°C | −3°C | 5.5°C | 26 mm |
| December | 7°C | −7°C | 0.1°C | 22 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Plainville (11 miles away), gets 20 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00148648; 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.
Which months are mildest at Webster Dam?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, October has the fewest days with rain (4).
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 USC00148648.
When is the last frost at Webster Dam?
In Webster Dam, the last spring frost (32°F) comes after April 30 in half of years and after May 13 in one year in ten; the first autumn frost comes before October 12 in half of years and before September 27 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
- April 301 year in 10 after May 13; 9 in 10 after April 13
- First autumn frost, half of years before
- October 121 year in 10 before September 27; 9 in 10 before October 23
NOAA puts the median frost-free season at 165 days, and the season without a hard freeze (28°F) at 184 days.
A hard freeze (28°F) comes after April 19 in half of springs and before October 21 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Webster Dam in zone 6a in ZIP code 67669, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 6a: the coldest night of a typical year reaches −7°F (17 complete years).
Frost dates for every NOAA station in Kansas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00148648; 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 at Webster Dam?
In a normal year in Webster Dam, 74 days a year reach 90°F (17 of them 100°F or more), 147 nights fall to 32°F or colder and 61 days bring measurable precipitation.
- Days at 90°F or more
- 74a normal year
- Days at 100°F or more
- 17a normal year
- Nights at 32°F or colder
- 147a normal year
- Days that stay below freezing
- 22high of 32°F or less
- Days with 0.01 inch of precipitation
- 61a normal year
The highest temperature in this station's record (since 1953) is 114°F, on July 28, 2026; the lowest is −25°F, on December 23, 1989.
The wettest calendar year on that record is 2018, with 37.17 in; the snowiest season is 1992–93, with 66.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00148648; records: ACIS (NOAA Regional Climate Centers), station USC00148648. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Webster Dam?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds at Webster Dam, 4.6 kWh per square metre a day. July is the sunniest month (87%) and February the cloudiest (75%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 77% | 2.4 |
| February | 75% | 3.3 |
| March | 77% | 4.5 |
| April | 76% | 5.5 |
| May | 78% | 6.3 |
| June | 86% | 7.1 |
| July | 87% | 7.0 |
| August | 85% | 6.1 |
| September | 84% | 5.0 |
| October | 80% | 3.7 |
| November | 81% | 2.7 |
| December | 77% | 2.1 |
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 many heating and cooling degree days does Webster Dam record?
A normal year at Webster Dam brings 5,367 heating degree days, 0% fewer than the median U.S. place (5,373), and 1,352 cooling degree days, 49% more than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,865 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,100 | 0 |
| February | 908 | 0 |
| March | 680 | 1 |
| April | 387 | 12 |
| May | 152 | 81 |
| June | 14 | 273 |
| July | 1 | 435 |
| August | 4 | 366 |
| September | 66 | 163 |
| October | 340 | 20 |
| November | 694 | 1 |
| December | 1,021 | 0 |
| Year (annual) | 5,367 | 1,352 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00148648. 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.
Have recent years at Webster Dam been warmer than normal?
2025 averaged 54.7°F, 0.8°F above the 1991-2020 normal of 53.9°F. 3 of the 3 complete years since 2023 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2023 | 54.6°F | +0.7°F | – |
| 2024 | 55.6°F | +1.7°F | – |
| 2025 | 54.7°F | +0.8°F | – |
Over 43 complete years from 1955 to 2025, the station's annual mean temperature rose at a fitted 1.7°F per century (+0.09°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00148648; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Webster Dam's climate compare?
Webster Dam is warmer than 41 of the 137 places with their own NOAA record in Kansas, and wetter than 38. Across the 7,247 U.S. stations with normals, its annual mean of 53.9°F is warmer than 57%.
In the Köppen classification computed from these normals, Webster Dam is Dfa: continental, no dry season, hot 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.
Which places near Webster Dam share this climate record?
3 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Stockton, KS1,433 people · 8 mi E
- Damar, KS107 people · 11 mi SW
- Nicodemus, KS0 people · 10 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Webster Dam's climate
What is the coldest month at Webster Dam?
January, with a normal high of 43°F and a normal low of 16°F. The warmest is July (94°F by day, 64°F at night).
Does it snow at Webster Dam?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Plainville (11 miles away), records 20 inches of snow in a normal year.
What is the rainiest month at Webster Dam?
May, with 4.31 in of precipitation in a normal year; the driest is January with 0.61 in.
What plant hardiness zone is Webster Dam in?
The USDA's 2023 map puts Webster Dam in zone 6a in ZIP code 67669, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −7°F (17 years, 1991-2020): zone 6a.
How late can frost come at Webster Dam?
In half of years the last 32°F night comes after April 30; in one year in ten it comes after May 13. Waiting until May 13 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Kansas climateThe statewide normals and every place in the state
- Plainville, KS11 miles from this station, 53.3°F a year
- Hill City, KS22 miles from this station, 53.9°F a year
- Kirwin, KS24 miles from this station, 52.1°F a year
- Alton, KS24 miles from this station, 53.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made