Owasso weather in May

In May, Owasso sees average daytime highs of 78°F and overnight lows near 61°F, with 6.0 in of rain across 12.4 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 74°F in the first days to 82°F by the end. The sky is clear or mostly clear about 32% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of May to 14 h 18 min by month's end. Set against the rest of the year, May is Owasso's 12th-clearest and 4th-windiest month. For the whole year in context, see Owasso's year-round climate.

Daytime high
78°
5th warmest
Overnight low
61°
8th coldest
Rainfall
6.0 in
12.4 wet days
Daylight
13 h 54 min
5:22 AM – 7:17 PM
Cloud cover
58%
12th clearest
Wind
8 mph
4th windiest
Solar energy
5.79 kWh/m²
Travel score
6.3
out of 10

Owasso is city in the Rogers and Tulsa counties, Oklahoma, United States.

Density
818/km²
people per km²
Founded
1904

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 74°F in the first days to 82°F by the end.

A typical May day in Owasso reaches about 78°F in the afternoon and slips back to 61°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 87°F. Set against its neighbours, May runs about 8°F warmer than April and about 9°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17455
27456
37456
47556
57557
67557
77658
87658
97658
107659
117759
127759
137760
147860
157860
167861
177961
187962
197962
208062
218063
228063
238063
248164
258164
268164
278265
288265
298265
308365
318366

How May really feels in Owasso

Once humidity and wind are folded in, May averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Owasso weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan47° / 30°2.05.91.39.81.8
Feb52° / 33°2.16.51.310.63.1
Mar62° / 42°3.79.40.811.75.3
Apr70° / 51°5.010.5012.96.5
May78° / 61°6.012.4013.96.3
Jun87° / 70°4.610.2014.44.8
Jul92° / 74°3.28.2014.23.7
Aug91° / 72°2.96.9013.44.0
Sep83° / 64°4.17.6012.26.3
Oct72° / 52°3.98.3011.17.3
Nov60° / 42°2.670.410.15.2
Dec50° / 33°2.46.41.39.62.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24951
34852
44852
54852
64852
74852
84951
94852
104852
114852
124951
134951
144951
154852
164852
174753
184852
194753
204753
214852
224753
234852
244852
254852
264852
274852
284951
294852
305050
315050

Chance of precipitation in May

Any precipitation

Owasso gets around 6.0 in of rain over 12.4 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
340
440
540
640
741
841
941
1041
1141
1241
1341
1440
1540
1640
1741
1840
1940
2040
2140
2240
2340
2440
2540
2640
2740
2840
2940
3039
3139

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
159171770
256181880
354181990
4521820100
5491921111
6471921121
7451922131
8431923151
9411923161
10401924171
11381924181
12371925191
13351925201
14341825211
15331825231
16311825241
17301725261
18291725281
19271625292
20261625312
21241625332
22231525342
23211525363
24191525383
25181525393
26161524414
27151524425
28131424435
29121424446
30111423457
31101423458

Wind in May

Winds average 8 mph in May.

Across May, daily wind ranges from about 7 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
287light breeze
297light breeze
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:37 AM to 5:13 AM, and sunset from 7:04 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:377:04
213.55:367:05
313.55:357:06
413.65:347:07
513.65:327:08
613.65:317:09
713.75:307:10
813.75:297:10
913.75:287:11
1013.75:277:12
1113.85:267:13
1213.85:267:14
1313.85:257:15
1413.95:247:16
1513.95:237:16
1613.95:227:17
1713.95:217:18
1814.05:207:19
1914.05:207:20
2014.05:197:21
2114.05:187:21
2214.15:187:22
2314.15:177:23
2414.15:167:24
2514.15:167:24
2614.25:157:25
2714.25:157:26
2814.25:147:27
2914.25:147:27
3014.25:137:28
3114.35:137:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.79 kWh/m².

For context, solar energy here swings from a low near 2.27 kWh/m² to a high of 6.73 kWh/m² in July across the year — May's 5.79 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.7Bright
105.7Bright
115.7Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
236.0Bright
246.0Bright
256.0Intense
266.0Intense
276.0Intense
286.1Intense
296.1Intense
306.1Intense
316.2Intense
Planning a trip in May

Is May a good time to visit Owasso?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.3
Sightseeing
3rd-best month of the year
6.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Owasso for sightseeing.

What to pack for Owasso in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Owasso sees daytime highs around 78°F and nights near 61°F. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Owasso in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Owasso peaks around June 23 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 23UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr8Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Owasso in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Owasso is worst in July — around 17 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (November, 5 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1716 µg/m³Nov 165 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar13Moderate
Apr13Moderate
May12Good
Jun14Moderate
Jul17Moderate
Aug14Moderate
Sep10Good
Oct6Good
Nov5Good
Dec6Good
Location & terrain

Where is Owasso?

Owasso sits at 36.3°N, 95.9°W, 610 ft above sea level, in United States. The nearest listed city is Tulsa, 11 mi away.

Topography around Owasso

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Owasso.

Within 2 miles, the terrain around Owasso has only modest variations in elevation — a maximum elevation change of 184 ft around an average of 620 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 436 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 794 ft.

The land around Owasso is covered by trees (36%), grassland (31%) and artificial surfaces (28%) within 2 miles, grassland (42%) and trees (39%) within 10 miles, and grassland (50%) and trees (41%) within 50 miles.

2 miles
184 ft
10 miles
436 ft
50 miles
794 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Tulsa 11 mi · Claremore 14 mi · Broken Arrow 16 mi · Sand Springs 17 mi · Jenks 18 mi · Bixby 23 mi · Sapulpa 24 mi · Bartlesville 34 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Owasso (36.2695°, -95.8547°, elevation 610 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).