Fitchburg weather in August

In August, Fitchburg sees average daytime highs of 79°F and overnight lows near 61°F, with 3.7 in of rain across 9.9 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 79°F through the month. The sky is clear or mostly clear about 36% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Fitchburg's 2nd-clearest and 12th-windiest month. For the whole year in context, see Fitchburg's year-round climate.

Daytime high
79°
2nd warmest
Overnight low
61°
11th coldest
Rainfall
3.7 in
9.9 wet days
Daylight
13 h 48 min
5:09 AM – 6:55 PM
Cloud cover
55%
2nd clearest
Wind
6 mph
12th windiest
Solar energy
5.39 kWh/m²
Travel score
6.7
out of 10

Fitchburg is city in Dane County, Wisconsin, United States.

Density
307/km²
people per km²
Founded
1847

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 79°F through the month.

A typical August day in Fitchburg reaches about 79°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 71°F and 87°F. Set against its neighbours, August runs about 2°F cooler than July and about 7°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18163
28063
38063
48063
58063
68062
78062
88062
98062
107962
117962
127962
137962
147962
157962
167961
177961
187961
197961
207961
217961
227961
237961
247861
257860
267860
277860
287860
297860
307859
317759

How August really feels in Fitchburg

Once humidity and wind are folded in, August 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

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

Fitchburg weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan28° / 13°1.67.66.49.20.0
Feb32° / 16°1.66.65.310.20.0
Mar44° / 27°2.49.23.911.60.9
Apr57° / 38°4.012.31.913.13.7
May68° / 49°4.012.50.114.45.8
Jun78° / 60°4.411.8015.16.4
Jul81° / 64°3.210.2014.86.5
Aug79° / 61°3.79.9013.86.7
Sep72° / 53°3.39.1012.36.9
Oct59° / 42°2.88.70.410.84.6
Nov44° / 30°2.282.29.50.9
Dec32° / 19°1.97.55.28.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55644
65644
75545
85446
95446
105446
115446
125446
135446
145446
155347
165347
175347
185347
195347
205347
215347
225347
235347
245446
255545
265545
275644
285644
295644
305743
315743

Chance of precipitation in August

Any precipitation

Fitchburg gets around 3.7 in of rain over 9.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
133
233
333
433
533
633
733
833
934
1034
1134
1234
1334
1434
1534
1634
1733
1833
1933
2033
2132
2232
2332
2431
2530
2630
2729
2829
2929
3028
3128

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 25% 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 (%)
1192427219
2192427219
3192427219
4192427218
5202427218
6202426218
7202426218
8212426218
9212426217
10212526217
11212526217
12212526226
13222526226
14222526226
15222526225
16222525235
17222525235
18222525244
19222525244
20222525244
21222525254
22222524254
23232524253
24232524243
25242523243
26252523233
27262523233
28272522223
29292522213
30302522203
31322521193

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 24 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 4:53 AM to 5:26 AM, and sunset from 7:15 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:537:15
214.34:547:14
314.34:557:13
414.34:567:12
514.24:577:11
614.24:587:09
714.24:597:08
814.15:007:07
914.15:017:05
1014.05:027:04
1114.05:037:02
1213.95:047:01
1313.95:067:00
1413.95:076:58
1513.85:086:57
1613.85:096:55
1713.75:106:54
1813.75:116:52
1913.65:126:50
2013.65:136:49
2113.55:146:47
2213.55:166:46
2313.55:176:44
2413.45:186:42
2513.45:196:41
2613.35:206:39
2713.35:216:37
2813.25:226:35
2913.25:236:34
3013.15:256:32
3113.15:266:30

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.39 kWh/m².

For context, solar energy here swings from a low near 1.56 kWh/m² to a high of 6.29 kWh/m² in June across the year — August's 5.39 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.8Bright
65.7Bright
75.7Bright
85.7Bright
95.6Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in August

Is August a good time to visit Fitchburg?

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

6.7
Sightseeing
2nd-best month of the year
6.5
Beach & pool
2nd-best month of the year

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

What to pack for Fitchburg in August

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

In August, Fitchburg sees daytime highs around 79°F and nights near 61°F. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Fitchburg in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Fitchburg peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 19UV 9Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Fitchburg in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Fitchburg is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 1715 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar13Moderate
Apr12Good
May13Moderate
Jun14Moderate
Jul15Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Fitchburg?

Fitchburg sits at 43.0°N, 89.5°W, 1,017 ft above sea level, in United States. The nearest listed city is Madison, 8.7 mi away.

Topography around Fitchburg

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

Within 2 miles, the terrain around Fitchburg has only modest variations in elevation — a maximum elevation change of 282 ft around an average of 1,040 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 420 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,060 ft.

The land around Fitchburg is covered by cropland (59%) and trees (24%) within 2 miles, cropland (36%), trees (29%) and grassland (21%) within 10 miles, and cropland (53%) and trees (27%) within 50 miles.

2 miles
282 ft
10 miles
420 ft
50 miles
1,060 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Madison 8.7 mi · Middleton 9.3 mi · Sun Prairie 20 mi · Janesville 30 mi · Beloit 39 mi · Watertown 41 mi · Freeport 47 mi · Beaver Dam 47 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 Fitchburg (42.9608°, -89.4698°, elevation 1,017 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).