Hannibal weather in October

In October, Hannibal sees average daytime highs of 65°F and overnight lows near 46°F, with 2.9 in of precipitation across 8.9 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 71°F in the first days to 59°F by the end. The sky is clear or mostly clear about 43% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Hannibal's 4th-clearest and 7th-windiest month. For the whole year in context, see Hannibal's year-round climate.

Daytime high
65°
6th warmest
Overnight low
46°
7th coldest
Precipitation
2.9 in
8.9 wet days
Daylight
10 h 54 min
6:22 AM – 5:19 PM
Cloud cover
52%
4th clearest
Wind
8 mph
7th windiest
Solar energy
3.36 kWh/m²
Travel score
6.2
out of 10

Hannibal is city in Marion and Ralls counties in Missouri, United States.

Density
425/km²
people per km²
Founded
1819

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 71°F in the first days to 59°F by the end.

A typical October day in Hannibal reaches about 65°F in the afternoon and slips back to 46°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 52°F and 79°F. Set against its neighbours, October runs about 12°F cooler than September and about 14°F warmer than November.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
17252
27252
37151
47151
57150
67050
77050
86949
96949
106848
116848
126748
136747
146647
156647
166546
176546
186546
196445
206445
216345
226344
236244
246244
256143
266143
276042
286042
295942
305941
315841

How October really feels in Hannibal

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.

Hannibal weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan36° / 21°2.07.249.50.0
Feb41° / 24°2.37.23.210.40.3
Mar53° / 34°3.110.11.811.72.9
Apr64° / 45°4.511.60.3135.4
May74° / 56°4.713.2014.26.3
Jun83° / 65°4.210.4014.85.8
Jul86° / 69°3.59.4014.55.1
Aug85° / 66°3.29.2013.65.6
Sep78° / 58°3.37.6012.37.2
Oct65° / 46°2.98.90.110.96.2
Nov52° / 35°3.17.91.19.82.9
Dec40° / 26°2.27.32.79.20.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46040
56040
65941
75842
85842
95743
105743
115644
125644
135644
145644
155644
165644
175446
185446
195347
205347
215248
225149
235050
245050
255050
265050
274852
284852
294852
304852
314852

Chance of precipitation in October

Any precipitation

Hannibal gets around 2.9 in of rain and snow over 8.9 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 28% and peaks near 31% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
124
224
324
424
524
625
725
826
926
1027
1127
1227
1327
1428
1528
1628
1729
1829
1930
2030
2130
2231
2331
2431
2531
2631
2731
2831
2931
3031
3130

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1681697
2681697
3701596
4711586
5731485
6741385
7751375
8771274
9771274
10801163
11801163
12821062
1384952
1484952
1586851
1686851
1786851
1887850
1988750
2089740
2189740
2289740
2389740
2489740
2589740
2690730
2790730
2890730
2990730
3091720
3192620

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
87light breeze
97light 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
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 6:07 AM to 6:39 AM, and sunset from 5:42 PM to 4:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:075:42
211.56:085:40
311.56:095:39
411.56:105:37
511.46:115:36
611.46:125:34
711.36:135:32
811.36:145:31
911.26:155:29
1011.26:165:28
1111.16:175:26
1211.16:185:24
1311.16:195:23
1411.06:205:21
1511.06:215:20
1610.96:225:19
1710.96:245:17
1810.96:255:16
1910.86:265:14
2010.86:275:13
2110.76:285:11
2210.76:295:10
2310.66:305:09
2410.66:315:07
2510.66:325:06
2610.56:335:05
2710.56:355:04
2810.46:365:02
2910.46:375:01
3010.46:385:00
3110.36:394:59

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.36 kWh/m².

For context, solar energy here swings from a low near 1.86 kWh/m² to a high of 6.45 kWh/m² in June across the year — October's 3.36 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.0Bright
44.0Moderate
53.9Moderate
63.9Moderate
73.8Moderate
83.8Moderate
93.7Moderate
103.7Moderate
113.6Moderate
123.6Moderate
133.5Moderate
143.5Moderate
153.4Moderate
163.4Moderate
173.3Moderate
183.3Moderate
193.2Moderate
203.2Moderate
213.1Moderate
223.1Moderate
233.0Moderate
243.0Moderate
253.0Moderate
262.9Moderate
272.9Moderate
282.8Moderate
292.8Moderate
302.7Moderate
312.7Moderate
Planning a trip in October

Hazard calendar for Hannibal

In seasonPeak

In October, Hannibal sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Hannibal sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Hannibal?

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

6.2
Sightseeing
3rd-best month of the year
2.6
Beach & pool
6th-best month of the year

October is a reasonable time to visit Hannibal for sightseeing.

What to pack for Hannibal in October

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

In October, Hannibal sees daytime highs around 65°F and nights near 46°F. Worth packing: rain gear. About 9 days see rain.

rain gear

UV index in Hannibal in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hannibal peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 21UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Hannibal 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 Hannibal is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodJul 1716 µg/m³Oct 237 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar12Good
Apr10Good
May13Moderate
Jun14Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec8Good
Location & terrain

Where is Hannibal?

Hannibal sits at 39.7°N, 91.4°W, 502 ft above sea level, in United States. The nearest listed city is Quincy, 16 mi away.

Topography around Hannibal

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

Within 2 miles, the terrain around Hannibal has only modest variations in elevation — a maximum elevation change of 305 ft around an average of 558 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 430 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 702 ft.

The land around Hannibal is covered by trees (49%) within 2 miles, cropland (46%) and trees (32%) within 10 miles, and cropland (53%) and trees (32%) within 50 miles.

2 miles
305 ft
10 miles
430 ft
50 miles
702 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Quincy 16 mi · Jacksonville 60 mi · Macomb 63 mi · Wentzville 68 mi · O'Fallon 71 mi · Kirksville 73 mi · Columbia 74 mi · Saint Peters 74 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 Hannibal (39.7084°, -91.3585°, elevation 502 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).