Pasco, United States — Weather in May 2027

Monthly climate averages for Pasco, United States. Based on 10-year ERA5 reanalysis data.

BSk Cold Semi-Arid
8.9 /10
Excellent

May is an excellent month in Pasco

Climate Overview

Pasco, United States in May has warm conditions, with highs averaging 26.8°C (80°F). Temperatures drop noticeably between day and night.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 26°C (78°F) at the start to 30°C (85°F) by month's end.

Rainfall is heaviest during the middle of the month, while the last third tends to be drier.

Expect around 11.9h of sunshine at the start of May, increasing to 12.9h by the end.

The warmest days tend to fall around the 31th, averaging 30.1°C (86°F).

Compared to April, this month is about 7°C warmer with 1 fewer rainy days. Temperatures will rise further into June.

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Monthly May Averages

Temperature
27°C / 12°C
Feels Like
25°C / 10°C
Rain
4 days · 18 mm
Sunshine
12.5h / day
Humidity
42% — Comfortable
Wind
18 km/h
Wind Direction
SW (219°)
Gusts
39 km/h
Daylight
15 h
Cloud Cover
49%
Clear Sky Days
5.9
UV Index
6.6 — High
Dew Point
6°C — Dry
Moon Phase
Waxing Gibbous · 66%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

36°C 31°C 26°C 21°C 16°C 11°C 6°C 151015202531
HighLow

Daily Precipitation

0 mm 1 mm 2 mm 3 mm 4 mm 151015202531
Rainfall

Daily Sunshine

0h 4h 8h 12h 16h 151015202531
Sunshine

Daily Wind Speed

0 5 10 15 20 25 151015202531
Wind Speed
Sun Position
Sunrise 05:25
Daylight 15h
Sunset 20:23

What to Expect

Daytime temperatures around 27°C (80°F) are ideal for full-day outdoor exploration.

Rain is uncommon in this month, so most days stay dry from morning through evening.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Poor
Temp
6°C / -1°C
Feels Like
3°C / -5°C
Rain
9days (40 mm) Wet
Sun
5.3h Fair
Humidity
82% Humid
UV
1.8 Low
Snow Days
3days
View Details
February
Poor
Temp
9°C / -1°C
Feels Like
6°C / -4°C
Rain
8days (32 mm) Wet
Sun
7h Good
Humidity
73% Muggy
UV
2.5 Moderate
Snow Days
5days
View Details
March
Fair
Temp
15°C / 3°C
Feels Like
11°C / 0°C
Rain
7days (29 mm) Good
Sun
9h Good
Humidity
65% Muggy
UV
4.2 Moderate
Snow Days
1days
View Details
April best
Excellent
Temp
20°C / 7°C
Feels Like
17°C / 4°C
Rain
5days (23 mm) Good
Sun
11h Excellent
Humidity
50% Moderate
UV
5.7 High
View Details
May best
Excellent
Temp
27°C / 12°C
Feels Like
25°C / 10°C
Rain
4days (18 mm) Good
Sun
12.5h Excellent
Humidity
42% Moderate
UV
6.6 High
View Details
June best
Excellent
Temp
31°C / 17°C
Feels Like
30°C / 15°C
Rain
2days (11 mm) Excellent
Sun
13.3h Excellent
Humidity
35% Comfortable
UV
7.1 Very High
View Details
July
Good
Temp
37°C / 20°C
Feels Like
35°C / 20°C
Rain
0days (1 mm) Excellent
Sun
13.9h Excellent
Humidity
29% Comfortable
UV
7.3 Very High
View Details
August best
Excellent
Temp
36°C / 20°C
Feels Like
34°C / 20°C
Rain
1days (2 mm) Excellent
Sun
12.5h Excellent
Humidity
34% Comfortable
UV
6.4 High
View Details
September best
Excellent
Temp
29°C / 15°C
Feels Like
27°C / 14°C
Rain
2days (9 mm) Excellent
Sun
10.8h Excellent
Humidity
47% Moderate
UV
5.1 High
View Details
October
Good
Temp
20°C / 8°C
Feels Like
17°C / 6°C
Rain
6days (30 mm) Good
Sun
8.5h Good
Humidity
62% Muggy
UV
3.5 Moderate
View Details
November
Poor
Temp
12°C / 3°C
Feels Like
9°C / 0°C
Rain
8days (38 mm) Wet
Sun
6.3h Fair
Humidity
78% Humid
UV
2 Low
Snow Days
1days
View Details
December
Poor
Temp
7°C / 0°C
Feels Like
3°C / -4°C
Rain
10days (40 mm) Wet
Sun
4.8h Fair
Humidity
82% Humid
UV
1.4 Low
Snow Days
4days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 6°C / -1°C 3°C / -5°C 9days (40 mm) Wet 5.3h Fair 82% Humid 1.8 Low Poor View Details
February 9°C / -1°C 6°C / -4°C 8days (32 mm) Wet 7h Good 73% Muggy 2.5 Moderate Poor View Details
March 15°C / 3°C 11°C / 0°C 7days (29 mm) Good 9h Good 65% Muggy 4.2 Moderate Fair View Details
April best 20°C / 7°C 17°C / 4°C 5days (23 mm) Good 11h Excellent 50% Moderate 5.7 High Excellent View Details
May best 27°C / 12°C 25°C / 10°C 4days (18 mm) Good 12.5h Excellent 42% Moderate 6.6 High Excellent View Details
June best 31°C / 17°C 30°C / 15°C 2days (11 mm) Excellent 13.3h Excellent 35% Comfortable 7.1 Very High Excellent View Details
July 37°C / 20°C 35°C / 20°C 0days (1 mm) Excellent 13.9h Excellent 29% Comfortable 7.3 Very High Good View Details
August best 36°C / 20°C 34°C / 20°C 1days (2 mm) Excellent 12.5h Excellent 34% Comfortable 6.4 High Excellent View Details
September best 29°C / 15°C 27°C / 14°C 2days (9 mm) Excellent 10.8h Excellent 47% Moderate 5.1 High Excellent View Details
October 20°C / 8°C 17°C / 6°C 6days (30 mm) Good 8.5h Good 62% Muggy 3.5 Moderate Good View Details
November 12°C / 3°C 9°C / 0°C 8days (38 mm) Wet 6.3h Fair 78% Humid 2 Low Poor View Details
December 7°C / 0°C 3°C / -4°C 10days (40 mm) Wet 4.8h Fair 82% Humid 1.4 Low Poor View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.

Packing List

Breathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

May is typically excellent for visiting Pasco, with average highs of 27°C (80°F) and around 4 rainy days. Pasco, United States in May has warm conditions, with highs averaging 26.8°C (80°F). Temperatures drop noticeably betwee
Pasco typically sees around 4 rainy days in May with 18 mm (0.7 in) of total rainfall. An umbrella should suffice.
Nights in Pasco during May are cool at around 12°C (54°F). Bring a jacket or sweater for evenings.
With highs of 27°C (80°F) and lows of 12°C (54°F) in May, we recommend: Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Comfortable walking shoes. Comfortable walking shoes are essential.
Yes, May offers some of the best weather conditions in Pasco with comfortable temperatures and lower chances of rain.
The average UV index in Pasco during May is 7 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Pasco gets approximately 15 hours of daylight per day in May, with around 13 hours of sunshine.
Snow is uncommon in Pasco during May based on 10-year climate averages.

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