Climate · May Day

May Day, KS climate

May Day has chilly winters and warm summers. A typical July afternoon reaches 90°, a January night drops to 18°, and about 16 inches of snow falls in a normal winter.

NOAA 1991-2020 climate normals Updated once a decade
July high
90°
627th coolest of 1,996 Kansas towns
January low
18°
489th coldest of 1,996 Kansas towns
Rain + melted snow
33 in
997th wettest of 1,996 Kansas towns
Snow a winter
16 in
660th snowiest of 1,996 Kansas towns
A normal year

What a year in May Day feels like

Winter

41° / 20°
Typical high / low · 7 days with an inch or more of snow

Spring

65° / 41°
Typical high / low · Last frost around Apr 19

Summer

88° / 65°
Typical high / low · 54 days reach 90° in a normal year

Fall

67° / 43°
Typical high / low · First frost around Oct 19
Best months to be outsideAprMaySepOctHighs of 62–84° and lows of 40° or more
Month by month

May Day weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet days30-yr range
January38°18°0.7" 5.4"4 22° – 40°
February44°21°1.1" 3.8"4 24° – 41°
March55°31°1.9" 1.9"6 36° – 56°
April66°41°3.1" 0.3"7 45° – 59°
May75°52°4.8" 09 58° – 72°
June85°62°4.7" 08 68° – 79°
July90°67°4.5" 08 74° – 84°
August88°65°3.8" 07 71° – 83°
September80°56°2.9" 06 62° – 75°
October68°43°2.4" 0.1"6 48° – 61°
November53°31°1.5" 0.8"5 34° – 50°
December42°21°1.2" 4.0"4 19° – 36°
Year65°42°32.6"16.3"74

“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.

Rain & snow

Rain and snow in May Day

May Day gets 33 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 74 days a year.

33 in
Rain + melted snow a year
Less rain than 71% of U.S. towns
16 in
Snow in a normal winter
Less snow than 63% of U.S. towns
74 days
With rain or snow (0.01"+)

Rain + melted snow by month

Inches of water
4.8"

Snowfall by month

Inches of snow
5.4"
Frost & the growing season

About 181 frost-free days a year

In half of years the last 32° night comes by April 19 and the first one by October 19. That leaves about 181 frost-free days for gardens, longer than 54% of U.S. towns.

121
nights at or below 32° in a normal year
4
nights below 0° in a normal year
54
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

90° days by month

Average days at 90° or more
Heating & cooling

Heating and cooling a home in May Day

Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In May Day, 78% of that work is heating and 22% is cooling.

78%heating
5,317 heating degree daysLess heating than 60% of U.S. towns
1,467 cooling degree daysMore cooling than 78% of U.S. towns

Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.

Around May Day

May Day and its neighbors

May Day borders 3 towns with climate data. January nights across them vary by 0.3°. Swede Creek has the coldest January nights (17°) and Center the hottest July afternoons (91°). May Day’s January low is 18° and its July high 90°.

Fancy Creek: January low 19°, July high 90°Jackson: January low 18°, July high 91°Blue Valley: January low 18°, July high 89°Blue Rapids: January low 17°, July high 90°Spring Creek: January low 17°, July high 90°Cottage Hill: January low 18°, July high 90°Bigelow: January low 17°, July high 90°Barnes: January low 17°, July high 90°Kimeo: January low 18°, July high 90°Center: January low 18°, July high 91°Swede Creek: January low 17°, July high 90°Lincoln: January low 18°, July high 90°May Day: January low 18°, July high 90° May DayCenterSwede CreekLincoln
ColderMilder17° to 19°
Swede Creek17.4° −0.3°
Center17.6° −0.1°
Lincoln17.6° −0.1°
May Day17.7°

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.

Compared with other towns

How May Day compares

Summer heat90° July high
Hotter than 80% of U.S. towns627th coolest of 1,996 Kansas towns
Winter cold18° January low
Colder than 58% of U.S. towns489th coldest of 1,996 Kansas towns
Precipitation33" a year
Drier than 71% of U.S. towns997th wettest of 1,996 Kansas towns
Snow16" a winter
Less snow than 63% of U.S. towns660th snowiest of 1,996 Kansas towns
Growing season181 frost-free days
Longer than 54% of U.S. towns838th shortest of 1,996 Kansas towns

Compared with every U.S. town and city on TownTapestry, each counted once.

Then and now

Warmer than it used to be

+0.7°1991–2020 average vs. the 20th century (1901–2000)

The last 30 years in May Day averaged 0.7° warmer than the 1900s. The biggest change is in January (+2.2°). The shift is smaller than in 89% of U.S. towns.

❄️ Winter+1.8° now 31°, was 29°
🌷 Spring+0.9° now 53°, was 52°
☀️ Summer+0.1° now 76°, was 76°
🍂 Fall+0.2° now 55°, was 55°

Change by month1991–2020 average minus 1901–2000 average, at May Day’s spot on NOAA’s grid

Year to year

How much a month can swing

A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 36° to 56°. July is the most reliable, staying within 11°.

Coldest to warmest month in 30 yearsNormal
Questions

Common questions about May Day’s climate

What is the coldest month in May Day?

January, with a typical high of 38° and a low of 18°.

What is the hottest month in May Day?

July, with a typical high of 90° and a low of 67°. About 54 days a year reach 90°.

How much snow does May Day get?

About 16 inches in a normal winter, most of it in January.

When is the first frost in May Day?

In half of years the first 32° night comes by October 19, and the last spring frost by April 19.

What is the rainiest month in May Day?

May, with 4.8 inches of rain and melted snow. The year totals 33 inches.

Temperatures and rainfall come from NOAA’s gridded climate normals for May Day itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Parallel, KS (2 mi, snow) and Clay Ctr, KS (17 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.

The coffee’s on

Where to, neighbor?

You’re in May Day, KSRiley CountyView boundary

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01