Farmington weather in July

In July, Farmington sees average daytime highs of 87°F and overnight lows near 69°F, with 3.5 in of rain across 11.3 wet days and about 14.3 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 87°F through the month. The sky is clear or mostly clear about 34% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 36 min at the start of July to 14 hours by month's end. Set against the rest of the year, July is Farmington's 5th-clearest and 11th-windiest month. For the whole year in context, see Farmington's year-round climate.

Daytime high
87°
1st warmest
Overnight low
69°
12th coldest
Rainfall
3.5 in
11.3 wet days
Daylight
14 h 24 min
4:56 AM – 7:19 PM
Cloud cover
55%
5th clearest
Wind
5 mph
11th windiest
Solar energy
6.31 kWh/m²
Travel score
4.6
out of 10

Farmington is city in and county seat of St. Francois County, Missouri, United States.

Density
764/km²
people per km²
Founded
1822

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 87°F through the month.

A typical July day in Farmington reaches about 87°F in the afternoon and slips back to 69°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 80°F and 94°F. Set against its neighbours, July runs about 4°F warmer than June and about 1°F warmer than August.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18669
28669
38769
48769
58769
68769
78769
88769
98769
108770
118770
128770
138770
148770
158870
168870
178870
188870
198870
208770
218770
228770
238769
248769
258769
268769
278769
288769
298769
308769
318769

How July really feels in Farmington

Once humidity and wind are folded in, July averages 20 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
20
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Farmington weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan41° / 26°2.88.22.69.70.1
Feb46° / 29°2.77.62.610.51.3
Mar56° / 37°4.011.21.411.73.7
Apr66° / 47°5.011.70.112.95.8
May74° / 57°4.913.20146.3
Jun83° / 66°3.711.6014.65.5
Jul87° / 69°3.511.3014.34.6
Aug86° / 67°3.09.8013.55.2
Sep79° / 59°3.28012.37.1
Oct67° / 48°3.48.40116.6
Nov55° / 37°3.68.70.6103.6
Dec44° / 29°2.88.11.99.40.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55545
65545
75545
85446
95446
105446
115446
125446
135545
145446
155446
165446
175446
185446
195446
205446
215446
225446
235545
245545
255545
265545
275644
285545
295545
305545
315545

Chance of precipitation in July

Any precipitation

Farmington gets around 3.5 in of rain over 11.3 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
438
538
637
737
837
936
1036
1136
1236
1336
1436
1536
1636
1736
1835
1935
2035
2136
2236
2336
2436
2536
2635
2735
2835
2935
3035
3135

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
16141835260
26141835260
36141835270
45141835280
55141835290
64131834301
74131734311
84121734321
93121735321
103111735331
113111735341
123101635351
132101635351
142101635362
152101534372
162101533372
172111533372
182111532382
193111531382
203121530382
213121629383
223121629373
233131629373
243131728362
253131729362
263141828342
273141929332
283141929322
294142029322
304142030312
314142031301

Wind in July

Winds average 5 mph in July.

Across July, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 36 min at the start of July to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:47 AM to 5:08 AM, and sunset from 7:23 PM to 7:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:477:23
214.64:487:23
314.64:487:22
414.64:497:22
514.54:497:22
614.54:507:22
714.54:507:22
814.54:517:22
914.54:517:21
1014.54:527:21
1114.54:537:21
1214.54:537:20
1314.44:547:20
1414.44:557:20
1514.44:557:19
1614.44:567:19
1714.44:577:18
1814.34:577:18
1914.34:587:17
2014.34:597:16
2114.35:007:16
2214.25:007:15
2314.25:017:14
2414.25:027:14
2514.25:037:13
2614.15:047:12
2714.15:047:11
2814.15:057:11
2914.15:067:10
3014.05:077:09
3114.05:087:08

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.31 kWh/m².

For context, solar energy here swings from a low near 1.99 kWh/m² to a high of 6.44 kWh/m² in June across the year — July's 6.31 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in July

Is July a good time to visit Farmington?

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

4.6
Sightseeing
7th-best month of the year
6.6
Beach & pool
3rd-best month of the year

July is a reasonable time to visit Farmington for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Farmington in July

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

In July, Farmington sees daytime highs around 87°F and nights near 69°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Farmington in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Farmington peaks around June 21 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 21UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar6High
Apr7Very high
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov4Moderate
Dec2Moderate

Air quality in Farmington in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Farmington is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (November, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1316 µg/m³Nov 176 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb9Good
Mar11Good
Apr9Good
May12Good
Jun14Moderate
Jul16Moderate
Aug12Moderate
Sep10Good
Oct6Good
Nov6Good
Dec6Good
Location & terrain

Where is Farmington?

Farmington sits at 37.8°N, 90.4°W, 912 ft above sea level, in United States. The nearest listed city is Arnold, 45 mi away.

Topography around Farmington

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

Within 2 miles, the terrain around Farmington has only modest variations in elevation — a maximum elevation change of 361 ft around an average of 922 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,014 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,562 ft.

The land around Farmington is covered by grassland (42%) and trees (34%) within 2 miles, trees (63%) and grassland (31%) within 10 miles, and trees (73%) within 50 miles.

2 miles
361 ft
10 miles
1,014 ft
50 miles
1,562 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Arnold 45 mi · Oakville 48 mi · Mehlville 50 mi · Concord 52 mi · Lemay 53 mi · Affton 53 mi · Kirkwood 55 mi · Webster Groves 56 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 Farmington (37.7809°, -90.4218°, elevation 912 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).