Eureka, Kansas climate: Normal weather by month, frost dates and records
Eureka's normal year runs from 19°F January nights to 90°F July afternoons, with 40.0 inches of precipitation and 9 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.9°C, January lows of −7°C, July highs of 32°C, 1,015 mm of precipitation a year.
- NOAA stationEureka (1 mi E)
- Station IDUSC00142622
- Location37.83°N 96.26°W
- Elevation1,100 ft (335 m)
- Population2,249
On October 23, the normal high in Eureka is 68°F and the normal low 41°F, and the chance of measurable rain or snow is 20%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Eureka.
- Jan 43° 19°
- Feb 48° 22°
- Mar 58° 32°
- Apr 68° 42°
- May 76° 53°
- Jun 85° 63°
- Jul 90° 67°
- Aug 90° 65°
- Sep 82° 56°
- Oct 71° 44°
- Nov 57° 31°
- Dec 46° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Eureka each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 19°F. The most precipitation falls in May (5.97 in), the least in January (0.97 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 43°F | 19°F | 30.7°F | 0.97 | 2.8 | 5 | <1 | 28 | 9 h 50 min |
| February | 48°F | 22°F | 35.0°F | 1.47 | 1.2 | 5 | <1 | 23 | 10 h 50 min |
| March | 58°F | 32°F | 44.8°F | 2.52 | 0.9 | 7 | <1 | 16 | 11 h 50 min |
| April | 68°F | 42°F | 54.5°F | 3.60 | 0.1 | 8 | <1 | 5 | 13 h 10 min |
| May | 76°F | 53°F | 64.4°F | 5.97 | 0.0 | 10 | 1 | <1 | 14 h 10 min |
| June | 85°F | 63°F | 73.9°F | 5.67 | 0.0 | 9 | 8 | <1 | 14 h 50 min |
| July | 90°F | 67°F | 78.8°F | 4.56 | 0.0 | 8 | 17 | <1 | 14 h 30 min |
| August | 90°F | 65°F | 77.3°F | 4.07 | 0.0 | 7 | 17 | <1 | 13 h 40 min |
| September | 82°F | 56°F | 69.2°F | 3.80 | 0.0 | 6 | 6 | <1 | 12 h 30 min |
| October | 71°F | 44°F | 57.0°F | 3.34 | 0.1 | 7 | <1 | 4 | 11 h 20 min |
| November | 57°F | 31°F | 44.3°F | 2.36 | 0.5 | 5 | <1 | 16 | 10 h 10 min |
| December | 46°F | 22°F | 33.9°F | 1.64 | 3.0 | 5 | <1 | 27 | 9 h 30 min |
| Year (annual) | 68°F | 43°F | 55.3°F | 39.97 | 8.6 | 81 | 50 | 118 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 6°C | −7°C | −0.7°C | 25 mm | 7 cm |
| February | 9°C | −5°C | 1.7°C | 37 mm | 3 cm |
| March | 15°C | 0°C | 7.1°C | 64 mm | 2 cm |
| April | 20°C | 5°C | 12.5°C | 91 mm | 0 cm |
| May | 24°C | 12°C | 18.0°C | 152 mm | 0 cm |
| June | 29°C | 17°C | 23.3°C | 144 mm | 0 cm |
| July | 32°C | 20°C | 26.0°C | 116 mm | 0 cm |
| August | 32°C | 18°C | 25.2°C | 103 mm | 0 cm |
| September | 28°C | 13°C | 20.7°C | 97 mm | 0 cm |
| October | 21°C | 6°C | 13.9°C | 85 mm | 0 cm |
| November | 14°C | 0°C | 6.8°C | 60 mm | 1 cm |
| December | 8°C | −5°C | 1.1°C | 42 mm | 8 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00142622; 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.
When is the best weather to visit Eureka?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, September has the fewest days with rain (6).
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 USC00142622.
When is the last frost in Eureka?
In Eureka, the last spring frost (32°F) comes after April 16 in half of years and after May 1 in one year in ten; the first autumn frost comes before October 20 in half of years and before October 5 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 161 year in 10 after May 1; 9 in 10 after April 1
- First autumn frost, half of years before
- October 201 year in 10 before October 5; 9 in 10 before November 2
NOAA puts the median frost-free season at 186 days, and the season without a hard freeze (28°F) at 206 days.
A hard freeze (28°F) comes after April 5 in half of springs and before October 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Eureka in zone 6b in ZIP code 67045, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Eureka's NOAA station is in zone 6b: the coldest night of a typical year reaches −2°F (28 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 USC00142622; 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 in Eureka?
In a normal year in Eureka, 50 days a year reach 90°F (7 of them 100°F or more), 118 nights fall to 32°F or colder and 81 days bring measurable precipitation.
- Days at 90°F or more
- 50a normal year
- Days at 100°F or more
- 7a normal year
- Nights at 32°F or colder
- 118a normal year
- Days that stay below freezing
- 18high of 32°F or less
- Days with 0.01 inch of precipitation
- 81a normal year
- Days with 1 inch of snow or more
- 4a normal year
The highest temperature in this station's record (since 1909) is 120°F, on July 18, 1936; the lowest is −22°F, on January 19, 1943.
The wettest calendar year on that record is 1961, with 60.13 in; the snowiest season is 1972–73, with 44.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00142622; records: ACIS (NOAA Regional Climate Centers), station USC00142622. Records use complete months only; a month missing more than three days is left out.
How sunny is Eureka?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Eureka, 4.5 kWh per square metre a day. July is the sunniest month (85%) and March the cloudiest (72%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 2.5 |
| February | 73% | 3.2 |
| March | 72% | 4.2 |
| April | 74% | 5.3 |
| May | 74% | 5.8 |
| June | 84% | 6.8 |
| July | 85% | 6.6 |
| August | 84% | 5.9 |
| September | 83% | 4.9 |
| October | 79% | 3.7 |
| November | 78% | 2.7 |
| December | 73% | 2.2 |
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 much heating and cooling does Eureka need?
A normal year in Eureka brings 4,890 heating degree days, 9% fewer than the median U.S. place (5,373), and 1,392 cooling degree days, 53% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,078 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,063 | 0 |
| February | 841 | 0 |
| March | 627 | 3 |
| April | 329 | 15 |
| May | 109 | 89 |
| June | 7 | 272 |
| July | 0 | 426 |
| August | 1 | 381 |
| September | 48 | 173 |
| October | 279 | 30 |
| November | 622 | 1 |
| December | 964 | 0 |
| Year (annual) | 4,890 | 1,392 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00142622. 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.
Has Eureka been warmer than normal lately?
2025 averaged 56.1°F, 0.8°F above the 1991-2020 normal of 55.3°F. 4 of the 4 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 55.5°F | +0.2°F | 29.20 | 24.7 |
| 2023 | 57.5°F | +2.2°F | 23.40 | 6.8 |
| 2024 | 58.1°F | +2.8°F | 26.30 | 2.5 |
| 2025 | 56.1°F | +0.8°F | 42.99 | 11.7 |
Over 74 complete years from 1910 to 2025, the station's annual mean temperature rose at a fitted 2.3°F per century (+0.13°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00142622; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Eureka's climate compare?
Eureka is warmer than 84 of the other 136 places with their own NOAA record in Kansas, and wetter than 115. Across the 7,247 U.S. stations with normals, its annual mean of 55.3°F is warmer than 61%.
In the Köppen classification computed from these normals, Eureka 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 Eureka share this climate record?
4 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.
- Hamilton, KS179 people · 12 mi NE
- Climax, KS45 people · 8 mi S
- Beaumont, KS40 people · 19 mi SW
- Neal, KS39 people · 10 mi E
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 Eureka's climate
What is the coldest month in Eureka?
January, with a normal high of 43°F and a normal low of 19°F. The warmest is July (90°F by day, 67°F at night).
Does it snow in Eureka?
Yes: 9 inches in a normal year, falling on 6 days with 0.1 inch or more, the most in December (3.0 inches).
What is the rainiest month in Eureka?
May, with 5.97 in of precipitation in a normal year; the driest is January with 0.97 in.
What plant hardiness zone is Eureka in?
The USDA's 2023 map puts Eureka in zone 6b in ZIP code 67045, the nearest ZIP area. By the same method at Eureka's NOAA station, the coldest night of a typical year reaches −2°F (28 years, 1991-2020): zone 6b.
How late can frost come in Eureka?
In half of years the last 32°F night comes after April 16; in one year in ten it comes after May 1. Waiting until May 1 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Kansas climateThe statewide normals and every place in the state
- Cassoday, KS23 miles from this station, 55.0°F a year
- Howard, KS25 miles from this station, 55.8°F a year
- Yates Center, KS30 miles from this station, 55.9°F a year
- Fredonia, KS31 miles from this station, 56.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made