Stillwater weather in April

In April, Stillwater sees average daytime highs of 71°F and overnight lows near 50°F, with 4.1 in of rain across 9 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 67°F in the first days to 73°F by the end. The sky is clear or mostly clear about 41% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 24 min by month's end. Set against the rest of the year, April is Stillwater's 9th-clearest and 1st-windiest month. For the whole year in context, see Stillwater's year-round climate.

Daytime high
71°
7th warmest
Overnight low
50°
6th coldest
Rainfall
4.1 in
9 wet days
Daylight
12 h 54 min
6:01 AM – 6:56 PM
Cloud cover
52%
9th clearest
Wind
9 mph
1st windiest
Solar energy
5.55 kWh/m²
Travel score
6.8
out of 10

Stillwater is city in Oklahoma, United States.

Density
630/km²
people per km²
Founded
1884

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 67°F in the first days to 73°F by the end.

A typical April day in Stillwater reaches about 71°F in the afternoon and slips back to 50°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 57°F and 82°F. Set against its neighbours, April runs about 9°F warmer than March and about 8°F cooler than May.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
16746
26747
36747
46847
56847
66848
76948
86948
96948
107049
117049
127049
137050
147150
157150
167150
177151
187151
197251
207251
217252
227252
237252
247252
257353
267353
277353
287353
297454
307454

How April really feels in Stillwater

Once humidity and wind are folded in, April 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

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

Stillwater weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan48° / 30°1.55.31.39.82.1
Feb53° / 33°1.85.71.310.63.4
Mar62° / 42°2.98.10.711.75.6
Apr71° / 50°4.19012.96.8
May79° / 60°4.811.2013.96.5
Jun88° / 69°4.19.9014.44.6
Jul93° / 73°2.97.4014.23.5
Aug91° / 72°2.66.9013.43.9
Sep83° / 64°3.17.3012.26.3
Oct72° / 52°3.27.60.111.17.4
Nov60° / 41°2.05.70.410.15.5
Dec50° / 32°1.85.41.39.62.5

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35644
45644
55644
65743
75743
85644
95644
105644
115644
125644
135644
145644
155545
165545
175545
185446
195446
205446
215347
225347
235347
245347
255347
265248
275248
285248
295248
305248

Chance of precipitation in April

Any precipitation

Stillwater gets around 4.1 in of rain over 9 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
128
228
327
427
527
627
727
827
927
1027
1128
1228
1329
1429
1530
1631
1731
1832
1932
2033
2133
2233
2333
2433
2534
2634
2734
2834
2934
3035

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1851050
2841051
3841051
4831151
5831151
6831151
7811261
8811261
9801361
10801361
11791461
12781561
13771571
14761671
15761671
16761671
17751681
18751681
19751681
20751681
21741691
22731791
237217101
247216102
257116112
267116112
276916123
286717133
296517144
306317155

Wind in April

Winds average 9 mph in April, the windiest month of the year.

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

051015151015202530
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over April. Sunrise moves from 6:23 AM to 5:43 AM, and sunset from 6:43 PM to 7:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:236:43
212.46:216:44
312.46:206:45
412.56:186:46
512.56:176:47
612.56:156:47
712.66:146:48
812.66:126:49
912.76:116:50
1012.76:096:51
1112.76:086:52
1212.86:076:53
1312.86:056:53
1412.86:046:54
1512.96:026:55
1612.96:016:56
1713.06:006:57
1813.05:586:58
1913.05:576:59
2013.15:566:59
2113.15:547:00
2213.15:537:01
2313.25:527:02
2413.25:507:03
2513.25:497:04
2613.35:487:05
2713.35:477:05
2813.35:457:06
2913.45:447:07
3013.45:437:08

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.55 kWh/m².

For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 6.84 kWh/m² in July across the year — April's 5.55 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.3Bright
55.3Bright
65.4Bright
75.4Bright
85.4Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in April

Is April a good time to visit Stillwater?

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

6.8
Sightseeing
2nd-best month of the year
4.4
Beach & pool
7th-best month of the year

April is a reasonable time to visit Stillwater for sightseeing.

What to pack for Stillwater in April

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

In April, Stillwater sees daytime highs around 71°F and nights near 50°F. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

UV index in Stillwater in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Stillwater peaks around July 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highHighModerateJul 12UV 10Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr9Very high
May8Very high
Jun10Very high
Jul10Very high
Aug10Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Stillwater in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Stillwater is worst in July — around 15 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (November, 5 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1815 µg/m³Nov 165 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar12Good
Apr13Moderate
May11Good
Jun12Moderate
Jul15Moderate
Aug13Moderate
Sep9Good
Oct5Good
Nov5Good
Dec5Good
Location & terrain

Where is Stillwater?

Stillwater sits at 36.1°N, 97.1°W, 896 ft above sea level, in United States. The nearest listed city is Edmond, 40 mi away.

Topography around Stillwater

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

Within 2 miles, the terrain around Stillwater has only modest variations in elevation — a maximum elevation change of 138 ft around an average of 902 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 341 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 719 ft.

The land around Stillwater is covered by trees (35%), artificial surfaces (33%) and grassland (24%) within 2 miles, grassland (50%) and trees (39%) within 10 miles, and grassland (47%) and trees (32%) within 50 miles.

2 miles
138 ft
10 miles
341 ft
50 miles
719 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Edmond 40 mi · Ponca City 41 mi · Enid 50 mi · Midwest City 50 mi · Del City 51 mi · Oklahoma City 52 mi · Bethany 52 mi · Sand Springs 53 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 Stillwater (36.1156°, -97.0584°, elevation 896 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).