Denison weather in October

In October, Denison sees average daytime highs of 75°F and overnight lows near 56°F, with 4.2 in of rain across 7.9 wet days and about 11.2 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 80°F in the first days to 70°F by the end. The sky is clear or mostly clear about 56% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 42 min by month's end. Set against the rest of the year, October is Denison's 3rd-clearest and 8th-windiest month. For the whole year in context, see Denison's year-round climate.

Daytime high
75°
6th warmest
Overnight low
56°
7th coldest
Rainfall
4.2 in
7.9 wet days
Daylight
11 h 06 min
6:37 AM – 5:45 PM
Cloud cover
41%
3rd clearest
Wind
8 mph
8th windiest
Solar energy
3.95 kWh/m²
Travel score
7.4
out of 10

Denison is city in Grayson County, Texas, United States.

Density
381/km²
people per km²
Founded
1872

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 80°F in the first days to 70°F by the end.

A typical October day in Denison reaches about 75°F in the afternoon and slips back to 56°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 64°F and 85°F. Set against its neighbours, October runs about 10°F cooler than September and about 11°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
18162
28062
38061
48061
57960
67960
77860
87859
97859
107759
117758
127758
137658
147657
157657
167556
177556
187456
197456
207455
217355
227355
237254
247254
257153
267153
277153
287052
297052
306951
316951

How October really feels in Denison

Once humidity and wind are folded in, October 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

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

Denison weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan53° / 36°2.56.70.7103.4
Feb58° / 40°2.67.20.710.74.5
Mar65° / 47°4.09.40.411.76.1
Apr73° / 55°4.69.1012.87.0
May80° / 64°6.011.9013.76.2
Jun88° / 72°3.78.8014.24.6
Jul93° / 75°2.06.30143.6
Aug92° / 75°2.05.8013.33.6
Sep85° / 68°3.36.8012.25.8
Oct75° / 56°4.27.9011.27.4
Nov64° / 46°3.47.10.110.26.2
Dec55° / 38°3.36.90.49.83.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 10% of October, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27228
37228
47129
57030
66931
76832
86832
96733
106634
116634
126535
136535
146535
156436
166436
176436
186337
196337
206436
216436
226337
236337
246337
256337
266238
276139
286139
296139
306139
316139

Chance of precipitation in October

Any precipitation

Denison gets around 4.2 in of rain over 7.9 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
118
218
319
420
521
621
722
823
924
1024
1125
1225
1326
1426
1526
1626
1726
1826
1926
2026
2126
2227
2327
2427
2527
2627
2727
2827
2927
3027
3127

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1371920177
2391919166
3402019156
4412019155
5422019145
6432018144
7452018144
8462017134
9472017133
10482016123
11502016123
12512015122
13522015112
14542014111
15552014101
16552113101
17552113101
18562013101
1959201290
2059201290
2160191290
2260191290
2362191180
2463181180
2563181180
2664171180
2765171170
2867161070
2967161070
3069151060
3169151060

Wind in October

Winds average 8 mph in October.

Across October, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147light breeze
157light 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
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over October. Sunrise moves from 6:25 AM to 6:50 AM, and sunset from 6:05 PM to 5:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:256:05
211.66:266:04
311.66:276:02
411.66:276:01
511.56:286:00
611.56:295:58
711.56:305:57
811.46:305:56
911.46:315:54
1011.46:325:53
1111.36:335:52
1211.36:345:50
1311.26:345:49
1411.26:355:48
1511.26:365:47
1611.16:375:45
1711.16:385:44
1811.16:395:43
1911.06:395:42
2011.06:405:41
2111.06:415:40
2210.96:425:39
2310.96:435:37
2410.96:445:36
2510.86:455:35
2610.86:455:34
2710.86:465:33
2810.86:475:32
2910.76:485:31
3010.76:495:30
3110.76:505:29

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.95 kWh/m².

For context, solar energy here swings from a low near 2.48 kWh/m² to a high of 6.76 kWh/m² in July across the year — October's 3.95 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.1Bright
134.1Bright
144.0Bright
154.0Moderate
164.0Moderate
173.9Moderate
183.9Moderate
193.8Moderate
203.8Moderate
213.7Moderate
223.7Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.5Moderate
273.5Moderate
283.4Moderate
293.4Moderate
303.4Moderate
313.3Moderate
Planning a trip in October

Is October a good time to visit Denison?

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

7.4
Sightseeing
1st-best month of the year
6.1
Beach & pool
6th-best month of the year

October is one of the better times to visit Denison for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Denison in October

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

In October, Denison sees daytime highs around 75°F and nights near 56°F. Worth packing: light clothes. About 8 days see rain.

light clothes

UV index in Denison in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Denison peaks around June 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 20UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr9Very high
May9Very high
Jun10Extreme
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Denison in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Denison is worst in July — around 18 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (November, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1618 µg/m³Nov 216 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar10Good
Apr10Good
May13Moderate
Jun15Moderate
Jul18Moderate
Aug14Moderate
Sep10Good
Oct6Good
Nov6Good
Dec6Good
Location & terrain

Where is Denison?

Denison sits at 33.8°N, 96.5°W, 728 ft above sea level, in United States. The nearest listed city is Sherman, 9.3 mi away.

Topography around Denison

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

Within 2 miles, the terrain around Denison has only modest variations in elevation — a maximum elevation change of 256 ft around an average of 709 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 449 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 768 ft.

The land around Denison is covered by trees (63%) and grassland (21%) within 2 miles, grassland (45%) and trees (38%) within 10 miles, and grassland (53%) and trees (32%) within 50 miles.

2 miles
256 ft
10 miles
449 ft
50 miles
768 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Sherman 9.3 mi · Durant 19 mi · Celina 33 mi · Gainesville 35 mi · McKinney 39 mi · Prosper 39 mi · Frisco 45 mi · Ardmore 45 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 Denison (33.7557°, -96.5367°, elevation 728 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).