Pasco weather in August

In August, Pasco sees average daytime highs of 91°F and overnight lows near 63°F, with 0.2 in of rain across 1.1 wet days and about 14 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 94°F in the first days to 87°F by the end. The sky is clear or mostly clear about 73% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 42 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Pasco's 2nd-clearest and 8th-windiest month. For the whole year in context, see Pasco's year-round climate.

Daytime high: 91°; 2nd warmest
Overnight low: 63°; 11th coldest
Rainfall: 0.2 in; 1.1 wet days
Daylight: 14 hours; 5:01 AM – 7:00 PM
Cloud cover: 25%; 2nd clearest
Wind: 6 mph; 8th windiest
Solar energy: 6.77 kWh/m²
Travel score: 4.6; out of 10

Pasco is seat of Franklin County, Washington, United States.

Density: 748/km²; people per km²
Founded: 1891

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

← July Pasco year-round climate September →Best places to visit in August

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 94°F in the first days to 87°F by the end.

A typical August day in Pasco reaches about 91°F in the afternoon and slips back to 63°F overnight — a 29°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 101°F. Set against its neighbours, August runs about 2°F cooler than July and about 10°F warmer than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	94	94	94	94	94	94	94	93	93	93	93	93	92	92	92	92	91	91	91	90	90	90	89	89	89	88	88	88	87	87	87
Avg low (°F)	65	65	65	65	65	65	64	64	64	64	64	64	64	63	63	63	63	62	62	62	62	62	61	61	61	60	60	60	60	59	59

	Avg high (°F)	Avg low (°F)
1	94	65
2	94	65
3	94	65
4	94	65
5	94	65
6	94	65
7	94	64
8	93	64
9	93	64
10	93	64
11	93	64
12	93	64
13	92	64
14	92	63
15	92	63
16	92	63
17	91	63
18	91	62
19	91	62
20	90	62
21	90	62
22	90	62
23	89	61
24	89	61
25	89	61
26	88	60
27	88	60
28	88	60
29	87	60
30	87	59
31	87	59

How August really feels in Pasco

Once humidity and wind are folded in, August averages 22 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

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

Pasco weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	42° / 30°	1.5	8.9	2.3	8.8	0.2
Feb	48° / 32°	1.0	6.8	1.3	10	1.9
Mar	57° / 38°	1.1	7	0.4	11.6	4.4
Apr	67° / 44°	0.8	5.5	0	13.3	6.7
May	77° / 52°	0.8	5	0	14.7	7.6
Jun	84° / 58°	0.6	3	0	15.5	6.7
Jul	93° / 64°	0.2	1.2	0	15.2	4.0
Aug	91° / 63°	0.2	1.1	0	14	4.6
Sep	81° / 55°	0.3	2.2	0	12.3	7.7
Oct	65° / 45°	0.9	5.8	0	10.7	6.6
Nov	50° / 36°	1.3	8.2	0.6	9.2	2.3
Dec	41° / 30°	1.5	9.2	2.6	8.5	0.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 73% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 13% of August, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to cloud over as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	90	90	90	89	89	89	88	88	88	87	86	86	86	86	86	86	86	85	85	85	85	85	84	84	85	85	85	84	84	84	84
Cloudier (%)	10	10	10	11	11	11	12	12	12	13	14	14	14	14	14	14	14	15	15	15	15	15	16	16	15	15	15	16	16	16	16

	Clearer (%)	Cloudier (%)
1	90	10
2	90	10
3	90	10
4	89	11
5	89	11
6	89	11
7	88	12
8	88	12
9	88	12
10	87	13
11	86	14
12	86	14
13	86	14
14	86	14
15	86	14
16	86	14
17	86	14
18	85	15
19	85	15
20	85	15
21	85	15
22	85	15
23	84	16
24	84	16
25	85	15
26	85	15
27	85	15
28	84	16
29	84	16
30	84	16
31	84	16

Chance of precipitation in August

Any precipitation

Pasco gets around 0.2 in of rain over 1.1 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 4% and peaks near 5% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	3	3	3	3	3	2	2	2	2	2	2	3	3	3	3	4	4	4	4	4	4	4	4	5	5	5	5	5	5	5	5

	Rain chance (%)
1	3
2	3
3	3
4	3
5	3
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	3
15	3
16	4
17	4
18	4
19	4
20	4
21	4
22	4
23	4
24	5
25	5
26	5
27	5
28	5
29	5
30	5
31	5

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	95	95	94	94	94	94	94	94	93	93	93	93	93	93	94	94	94	94	94	95	95	96	96	96	97	97	98	98	98	98	98
Comfortable (%)	5	5	6	6	6	6	6	6	7	7	7	7	7	7	6	6	6	6	6	5	5	4	4	4	3	3	2	2	2	2	2

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	93	7
10	93	7
11	93	7
12	93	7
13	93	7
14	93	7
15	94	6
16	94	6
17	94	6
18	94	6
19	94	6
20	95	5
21	95	5
22	96	4
23	96	4
24	96	4
25	97	3
26	97	3
27	98	2
28	98	2
29	98	2
30	98	2
31	98	2

Wind in August

Winds average 6 mph in August.

Across August, 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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm
31	5	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 42 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over August. Sunrise moves from 4:42 AM to 5:20 AM, and sunset from 7:23 PM to 6:33 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	14.7	14.6	14.6	14.6	14.5	14.5	14.4	14.4	14.3	14.3	14.2	14.2	14.1	14.1	14.0	14.0	13.9	13.9	13.8	13.8	13.7	13.7	13.6	13.6	13.5	13.5	13.4	13.4	13.3	13.3	13.2
Sunrise (AM)	4:42	4:43	4:44	4:46	4:47	4:48	4:49	4:51	4:52	4:53	4:54	4:56	4:57	4:58	4:59	5:01	5:02	5:03	5:05	5:06	5:07	5:09	5:10	5:11	5:12	5:14	5:15	5:16	5:18	5:19	5:20
Sunset (PM)	7:23	7:22	7:20	7:19	7:17	7:16	7:15	7:13	7:12	7:10	7:08	7:07	7:05	7:04	7:02	7:00	6:59	6:57	6:55	6:53	6:51	6:50	6:48	6:46	6:44	6:42	6:40	6:38	6:37	6:35	6:33

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.7	4:42	7:23
2	14.6	4:43	7:22
3	14.6	4:44	7:20
4	14.6	4:46	7:19
5	14.5	4:47	7:17
6	14.5	4:48	7:16
7	14.4	4:49	7:15
8	14.4	4:51	7:13
9	14.3	4:52	7:12
10	14.3	4:53	7:10
11	14.2	4:54	7:08
12	14.2	4:56	7:07
13	14.1	4:57	7:05
14	14.1	4:58	7:04
15	14.0	4:59	7:02
16	14.0	5:01	7:00
17	13.9	5:02	6:59
18	13.9	5:03	6:57
19	13.8	5:05	6:55
20	13.8	5:06	6:53
21	13.7	5:07	6:51
22	13.7	5:09	6:50
23	13.6	5:10	6:48
24	13.6	5:11	6:46
25	13.5	5:12	6:44
26	13.5	5:14	6:42
27	13.4	5:15	6:40
28	13.4	5:16	6:38
29	13.3	5:18	6:37
30	13.3	5:19	6:35
31	13.2	5:20	6:33

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.77 kWh/m².

For context, solar energy here swings from a low near 1.25 kWh/m² to a high of 7.85 kWh/m² in July across the year — August's 6.77 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	7.4	7.4	7.4	7.3	7.3	7.2	7.2	7.2	7.1	7.1	7.0	7.0	6.9	6.9	6.8	6.8	6.7	6.7	6.6	6.6	6.5	6.5	6.4	6.4	6.3	6.3	6.2	6.1	6.1	6.0	6.0
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Bright

	Solar energy (kWh/m²)	Level
1	7.4	Intense
2	7.4	Intense
3	7.4	Intense
4	7.3	Intense
5	7.3	Intense
6	7.2	Intense
7	7.2	Intense
8	7.2	Intense
9	7.1	Intense
10	7.1	Intense
11	7.0	Intense
12	7.0	Intense
13	6.9	Intense
14	6.9	Intense
15	6.8	Intense
16	6.8	Intense
17	6.7	Intense
18	6.7	Intense
19	6.6	Intense
20	6.6	Intense
21	6.5	Intense
22	6.5	Intense
23	6.4	Intense
24	6.4	Intense
25	6.3	Intense
26	6.3	Intense
27	6.2	Intense
28	6.1	Intense
29	6.1	Intense
30	6.0	Intense
31	6.0	Bright

Planning a trip in August

Is August a good time to visit Pasco?

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

4.6

Sightseeing

6th-best month of the year

8.0

Beach & pool

2nd-best month of the year

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

What to pack for Pasco in August

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

In August, Pasco sees daytime highs around 91°F and nights near 63°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Pasco in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Pasco peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 1 (low).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	4	5	7	6	8	6	5	3	1	1
Level	Low	Low	Moderate	Moderate	Very high	High	Very high	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	4	Moderate
Apr	5	Moderate
May	7	Very high
Jun	6	High
Jul	8	Very high
Aug	6	High
Sep	5	Moderate
Oct	3	Moderate
Nov	1	Low
Dec	1	Low

Air quality in Pasco 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 Pasco is worst in August — around 27 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 9 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	10	11	14	11	9	10	13	27	21	12	11	9
Level	Good	Good	Moderate	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	10	Good
Feb	11	Good
Mar	14	Moderate
Apr	11	Good
May	9	Good
Jun	10	Good
Jul	13	Moderate
Aug	27	Moderate
Sep	21	Moderate
Oct	12	Moderate
Nov	11	Good
Dec	9	Good

Location & terrain

Where is Pasco?

Pasco sits at 46.2°N, 119.1°W, 387 ft above sea level, in United States. The nearest listed city is Kennewick, 2.5 mi away.

Topography around Pasco

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

Within 2 miles, the terrain around Pasco has only modest variations in elevation — a maximum elevation change of 118 ft around an average of 387 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,886 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,009 ft.

The land around Pasco is covered by artificial surfaces (54%) within 2 miles, grassland (36%) and cropland (32%) within 10 miles, and grassland (50%) and cropland (43%) within 50 miles.

2 miles

118 ft

artificial surfaces 54%

10 miles

1,886 ft

grassland 36%

50 miles

4,009 ft

grassland 50%

treesgrasslandcroplandartificial surfacesbare terrainwater

← July Pasco year-round climate September →Best places to visit in August

August weather nearby: Kennewick 2.5 mi · Tri-Cities 4.3 mi · Richland 9.3 mi · Hermiston 29 mi · Walla Walla 39 mi · Pendleton 42 mi · Sunnyside 43 mi · Moses Lake 62 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

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 Pasco (46.2396°, -119.1006°, elevation 387 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).

	Avg high (°F)	Avg low (°F)
1	94	65
2	94	65
3	94	65
4	94	65
5	94	65
6	94	65
7	94	64
8	93	64
9	93	64
10	93	64
11	93	64
12	93	64
13	92	64
14	92	63
15	92	63
16	92	63
17	91	63
18	91	62
19	91	62
20	90	62
21	90	62
22	90	62
23	89	61
24	89	61
25	89	61
26	88	60
27	88	60
28	88	60
29	87	60
30	87	59
31	87	59

	Clearer (%)	Cloudier (%)
1	90	10
2	90	10
3	90	10
4	89	11
5	89	11
6	89	11
7	88	12
8	88	12
9	88	12
10	87	13
11	86	14
12	86	14
13	86	14
14	86	14
15	86	14
16	86	14
17	86	14
18	85	15
19	85	15
20	85	15
21	85	15
22	85	15
23	84	16
24	84	16
25	85	15
26	85	15
27	85	15
28	84	16
29	84	16
30	84	16
31	84	16

	Rain chance (%)
1	3
2	3
3	3
4	3
5	3
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	3
15	3
16	4
17	4
18	4
19	4
20	4
21	4
22	4
23	4
24	5
25	5
26	5
27	5
28	5
29	5
30	5
31	5

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	93	7
10	93	7
11	93	7
12	93	7
13	93	7
14	93	7
15	94	6
16	94	6
17	94	6
18	94	6
19	94	6
20	95	5
21	95	5
22	96	4
23	96	4
24	96	4
25	97	3
26	97	3
27	98	2
28	98	2
29	98	2
30	98	2
31	98	2

	Avg high (°F)	Avg low (°F)
1	94	65
2	94	65
3	94	65
4	94	65
5	94	65
6	94	65
7	94	64
8	93	64
9	93	64
10	93	64
11	93	64
12	93	64
13	92	64
14	92	63
15	92	63
16	92	63
17	91	63
18	91	62
19	91	62
20	90	62
21	90	62
22	90	62
23	89	61
24	89	61
25	89	61
26	88	60
27	88	60
28	88	60
29	87	60
30	87	59
31	87	59

	Clearer (%)	Cloudier (%)
1	90	10
2	90	10
3	90	10
4	89	11
5	89	11
6	89	11
7	88	12
8	88	12
9	88	12
10	87	13
11	86	14
12	86	14
13	86	14
14	86	14
15	86	14
16	86	14
17	86	14
18	85	15
19	85	15
20	85	15
21	85	15
22	85	15
23	84	16
24	84	16
25	85	15
26	85	15
27	85	15
28	84	16
29	84	16
30	84	16
31	84	16

	Rain chance (%)
1	3
2	3
3	3
4	3
5	3
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	3
15	3
16	4
17	4
18	4
19	4
20	4
21	4
22	4
23	4
24	5
25	5
26	5
27	5
28	5
29	5
30	5
31	5

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	93	7
10	93	7
11	93	7
12	93	7
13	93	7
14	93	7
15	94	6
16	94	6
17	94	6
18	94	6
19	94	6
20	95	5
21	95	5
22	96	4
23	96	4
24	96	4
25	97	3
26	97	3
27	98	2
28	98	2
29	98	2
30	98	2
31	98	2

	Avg high (°F)	Avg low (°F)
1	94	65
2	94	65
3	94	65
4	94	65
5	94	65
6	94	65
7	94	64
8	93	64
9	93	64
10	93	64
11	93	64
12	93	64
13	92	64
14	92	63
15	92	63
16	92	63
17	91	63
18	91	62
19	91	62
20	90	62
21	90	62
22	90	62
23	89	61
24	89	61
25	89	61
26	88	60
27	88	60
28	88	60
29	87	60
30	87	59
31	87	59

	Clearer (%)	Cloudier (%)
1	90	10
2	90	10
3	90	10
4	89	11
5	89	11
6	89	11
7	88	12
8	88	12
9	88	12
10	87	13
11	86	14
12	86	14
13	86	14
14	86	14
15	86	14
16	86	14
17	86	14
18	85	15
19	85	15
20	85	15
21	85	15
22	85	15
23	84	16
24	84	16
25	85	15
26	85	15
27	85	15
28	84	16
29	84	16
30	84	16
31	84	16

	Rain chance (%)
1	3
2	3
3	3
4	3
5	3
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	3
15	3
16	4
17	4
18	4
19	4
20	4
21	4
22	4
23	4
24	5
25	5
26	5
27	5
28	5
29	5
30	5
31	5

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	93	7
10	93	7
11	93	7
12	93	7
13	93	7
14	93	7
15	94	6
16	94	6
17	94	6
18	94	6
19	94	6
20	95	5
21	95	5
22	96	4
23	96	4
24	96	4
25	97	3
26	97	3
27	98	2
28	98	2
29	98	2
30	98	2
31	98	2