Olympia weather in May
In May, Olympia sees average daytime highs of 63°F and overnight lows near 48°F, with 2.9 in of rain across 10.2 wet days and about 14.8 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.
Highs climb over the month, from about 61°F in the first days to 65°F by the end. The sky is clear or mostly clear about 16% of the time in May, and the air most often feels dry.
Daylight stretches from about 14 h 12 min at the start of May to 15 h 24 min by month's end. Set against the rest of the year, May is Olympia's 6th-clearest and 9th-windiest month. For the whole year in context, see Olympia's year-round climate.
- Daytime high
- 63°
- 5th warmest
- Overnight low
- 48°
- 8th coldest
- Rainfall
- 2.9 in
- 10.2 wet days
- Daylight
- 14 h 48 min
- 4:42 AM – 7:33 PM
- Cloud cover
- 68%
- 6th clearest
- Wind
- 5 mph
- 9th windiest
- Solar energy
- 5.41 kWh/m²
- Travel score
- 5.5
- out of 10
Olympia is capital city of the U.S. state of Washington and seat of Thurston County.
- Density
- 1,093/km²
- people per km²
- Founded
- 1859
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 61°F in the first days to 65°F by the end.
A typical May day in Olympia reaches about 63°F in the afternoon and slips back to 48°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 74°F. Set against its neighbours, May runs about 6°F warmer than April and about 5°F cooler than June.
| 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) | 60 | 61 | 61 | 61 | 61 | 62 | 62 | 62 | 62 | 62 | 63 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 66 | 66 |
| Avg low (°F) | 45 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 47 | 47 | 47 | 47 | 47 | 47 | 48 | 48 | 48 | 48 | 48 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 50 | 50 | 50 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 60 | 45 |
| 2 | 61 | 45 |
| 3 | 61 | 45 |
| 4 | 61 | 46 |
| 5 | 61 | 46 |
| 6 | 62 | 46 |
| 7 | 62 | 46 |
| 8 | 62 | 46 |
| 9 | 62 | 46 |
| 10 | 62 | 47 |
| 11 | 63 | 47 |
| 12 | 63 | 47 |
| 13 | 63 | 47 |
| 14 | 63 | 47 |
| 15 | 63 | 47 |
| 16 | 64 | 48 |
| 17 | 64 | 48 |
| 18 | 64 | 48 |
| 19 | 64 | 48 |
| 20 | 64 | 48 |
| 21 | 64 | 49 |
| 22 | 64 | 49 |
| 23 | 65 | 49 |
| 24 | 65 | 49 |
| 25 | 65 | 49 |
| 26 | 65 | 49 |
| 27 | 65 | 49 |
| 28 | 65 | 49 |
| 29 | 65 | 50 |
| 30 | 66 | 50 |
| 31 | 66 | 50 |
How May really feels in Olympia
Once humidity and wind are folded in, May 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.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Olympia weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 45° / 38° | 7.6 | 17.5 | 2.3 | 8.7 | 0.9 |
| Feb | 48° / 38° | 5.3 | 14.4 | 2 | 10 | 1.5 |
| Mar | 52° / 40° | 6.3 | 17.6 | 1.1 | 11.6 | 2.2 |
| Apr | 57° / 43° | 4.7 | 14.9 | 0.1 | 13.3 | 3.5 |
| May | 63° / 48° | 2.9 | 10.2 | 0 | 14.8 | 5.5 |
| Jun | 68° / 52° | 1.8 | 7.5 | 0 | 15.6 | 6.5 |
| Jul | 74° / 55° | 0.7 | 3.1 | 0 | 15.3 | 8.2 |
| Aug | 75° / 55° | 1.0 | 4 | 0 | 14 | 8.2 |
| Sep | 69° / 52° | 2.1 | 7 | 0 | 12.4 | 7.0 |
| Oct | 59° / 47° | 5.1 | 12.7 | 0 | 10.6 | 4.3 |
| Nov | 50° / 41° | 8.4 | 17.6 | 0.6 | 9.1 | 1.8 |
| Dec | 45° / 37° | 8.1 | 17.1 | 2.3 | 8.4 | 0.7 |
Cloud cover in May
The sky is clear or mostly clear about 16% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 68%.
| 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 (%) | 35 | 34 | 34 | 35 | 34 | 34 | 34 | 34 | 34 | 33 | 33 | 31 | 31 | 30 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 31 | 31 | 31 | 32 | 32 | 32 | 34 | 34 | 34 | 35 |
| Cloudier (%) | 65 | 66 | 66 | 65 | 66 | 66 | 66 | 66 | 66 | 67 | 67 | 69 | 69 | 70 | 71 | 70 | 71 | 71 | 71 | 71 | 71 | 69 | 69 | 69 | 68 | 68 | 68 | 66 | 66 | 66 | 65 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 35 | 65 |
| 2 | 34 | 66 |
| 3 | 34 | 66 |
| 4 | 35 | 65 |
| 5 | 34 | 66 |
| 6 | 34 | 66 |
| 7 | 34 | 66 |
| 8 | 34 | 66 |
| 9 | 34 | 66 |
| 10 | 33 | 67 |
| 11 | 33 | 67 |
| 12 | 31 | 69 |
| 13 | 31 | 69 |
| 14 | 30 | 70 |
| 15 | 29 | 71 |
| 16 | 30 | 70 |
| 17 | 29 | 71 |
| 18 | 29 | 71 |
| 19 | 29 | 71 |
| 20 | 29 | 71 |
| 21 | 29 | 71 |
| 22 | 31 | 69 |
| 23 | 31 | 69 |
| 24 | 31 | 69 |
| 25 | 32 | 68 |
| 26 | 32 | 68 |
| 27 | 32 | 68 |
| 28 | 34 | 66 |
| 29 | 34 | 66 |
| 30 | 34 | 66 |
| 31 | 35 | 65 |
Chance of precipitation in May
Olympia gets around 2.9 in of rain over 10.2 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 33% and peaks near 39% on the wettest days. The odds ease toward the end of the month.
| 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 (%) | 39 | 38 | 38 | 37 | 36 | 36 | 35 | 35 | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 31 | 30 | 30 | 29 | 29 | 29 | 28 | 28 | 28 |
| Rain chance (%) | |
|---|---|
| 1 | 39 |
| 2 | 38 |
| 3 | 38 |
| 4 | 37 |
| 5 | 36 |
| 6 | 36 |
| 7 | 35 |
| 8 | 35 |
| 9 | 34 |
| 10 | 34 |
| 11 | 34 |
| 12 | 34 |
| 13 | 33 |
| 14 | 33 |
| 15 | 33 |
| 16 | 33 |
| 17 | 33 |
| 18 | 33 |
| 19 | 33 |
| 20 | 32 |
| 21 | 32 |
| 22 | 32 |
| 23 | 31 |
| 24 | 30 |
| 25 | 30 |
| 26 | 29 |
| 27 | 29 |
| 28 | 29 |
| 29 | 28 |
| 30 | 28 |
| 31 | 28 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 98% 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 (%) | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 98 | 98 | 98 | 97 | 97 | 97 | 96 | 96 |
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 99 | 1 |
| 2 | 99 | 1 |
| 3 | 99 | 1 |
| 4 | 99 | 1 |
| 5 | 99 | 1 |
| 6 | 99 | 1 |
| 7 | 99 | 1 |
| 8 | 99 | 1 |
| 9 | 99 | 1 |
| 10 | 99 | 1 |
| 11 | 99 | 1 |
| 12 | 99 | 1 |
| 13 | 99 | 1 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 99 | 1 |
| 18 | 99 | 1 |
| 19 | 99 | 1 |
| 20 | 99 | 1 |
| 21 | 99 | 1 |
| 22 | 99 | 1 |
| 23 | 98 | 2 |
| 24 | 98 | 2 |
| 25 | 98 | 2 |
| 26 | 98 | 2 |
| 27 | 97 | 3 |
| 28 | 97 | 3 |
| 29 | 97 | 3 |
| 30 | 96 | 4 |
| 31 | 96 | 4 |
Wind in May
Winds average 5 mph in May.
Across May, 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 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 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 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 5 | calm |
| 28 | 5 | calm |
| 29 | 5 | calm |
| 30 | 5 | calm |
| 31 | 5 | calm |
Sunrise & sunset in May
Daylight runs from about 14 h 12 min at the start of May to 15 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 72 minutes over May. Sunrise moves from 5:04 AM to 4:28 AM, and sunset from 7:13 PM to 7:50 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) | 14.2 | 14.2 | 14.3 | 14.3 | 14.3 | 14.4 | 14.4 | 14.5 | 14.5 | 14.6 | 14.6 | 14.7 | 14.7 | 14.8 | 14.8 | 14.8 | 14.9 | 14.9 | 15.0 | 15.0 | 15.0 | 15.1 | 15.1 | 15.2 | 15.2 | 15.2 | 15.3 | 15.3 | 15.3 | 15.3 | 15.4 |
| Sunrise (AM) | 5:04 | 5:03 | 5:01 | 4:59 | 4:58 | 4:56 | 4:55 | 4:53 | 4:52 | 4:50 | 4:49 | 4:48 | 4:46 | 4:45 | 4:44 | 4:42 | 4:41 | 4:40 | 4:39 | 4:38 | 4:37 | 4:36 | 4:35 | 4:34 | 4:33 | 4:32 | 4:31 | 4:30 | 4:29 | 4:28 | 4:28 |
| Sunset (PM) | 7:13 | 7:15 | 7:16 | 7:17 | 7:19 | 7:20 | 7:21 | 7:23 | 7:24 | 7:25 | 7:27 | 7:28 | 7:29 | 7:31 | 7:32 | 7:33 | 7:34 | 7:36 | 7:37 | 7:38 | 7:39 | 7:41 | 7:42 | 7:43 | 7:44 | 7:45 | 7:46 | 7:47 | 7:48 | 7:49 | 7:50 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.2 | 5:04 | 7:13 |
| 2 | 14.2 | 5:03 | 7:15 |
| 3 | 14.3 | 5:01 | 7:16 |
| 4 | 14.3 | 4:59 | 7:17 |
| 5 | 14.3 | 4:58 | 7:19 |
| 6 | 14.4 | 4:56 | 7:20 |
| 7 | 14.4 | 4:55 | 7:21 |
| 8 | 14.5 | 4:53 | 7:23 |
| 9 | 14.5 | 4:52 | 7:24 |
| 10 | 14.6 | 4:50 | 7:25 |
| 11 | 14.6 | 4:49 | 7:27 |
| 12 | 14.7 | 4:48 | 7:28 |
| 13 | 14.7 | 4:46 | 7:29 |
| 14 | 14.8 | 4:45 | 7:31 |
| 15 | 14.8 | 4:44 | 7:32 |
| 16 | 14.8 | 4:42 | 7:33 |
| 17 | 14.9 | 4:41 | 7:34 |
| 18 | 14.9 | 4:40 | 7:36 |
| 19 | 15.0 | 4:39 | 7:37 |
| 20 | 15.0 | 4:38 | 7:38 |
| 21 | 15.0 | 4:37 | 7:39 |
| 22 | 15.1 | 4:36 | 7:41 |
| 23 | 15.1 | 4:35 | 7:42 |
| 24 | 15.2 | 4:34 | 7:43 |
| 25 | 15.2 | 4:33 | 7:44 |
| 26 | 15.2 | 4:32 | 7:45 |
| 27 | 15.3 | 4:31 | 7:46 |
| 28 | 15.3 | 4:30 | 7:47 |
| 29 | 15.3 | 4:29 | 7:48 |
| 30 | 15.3 | 4:28 | 7:49 |
| 31 | 15.4 | 4:28 | 7:50 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 5.41 kWh/m².
For context, solar energy here swings from a low near 0.89 kWh/m² to a high of 6.29 kWh/m² in July across the year — May's 5.41 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) | 5.1 | 5.1 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.1 | Bright |
| 2 | 5.1 | Bright |
| 3 | 5.2 | Bright |
| 4 | 5.2 | Bright |
| 5 | 5.3 | Bright |
| 6 | 5.3 | Bright |
| 7 | 5.3 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.4 | Bright |
| 10 | 5.4 | Bright |
| 11 | 5.4 | Bright |
| 12 | 5.4 | Bright |
| 13 | 5.4 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.4 | Bright |
| 16 | 5.4 | Bright |
| 17 | 5.4 | Bright |
| 18 | 5.4 | Bright |
| 19 | 5.4 | Bright |
| 20 | 5.4 | Bright |
| 21 | 5.4 | Bright |
| 22 | 5.4 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.5 | Bright |
| 26 | 5.5 | Bright |
| 27 | 5.5 | Bright |
| 28 | 5.5 | Bright |
| 29 | 5.5 | Bright |
| 30 | 5.5 | Bright |
| 31 | 5.5 | Bright |
Hazard calendar for Olympia
None of Olympia's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Olympia's rainy season runs October–April, when most of the year's rain falls.
Is May a good time to visit Olympia?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Olympia for sightseeing.
What to pack for Olympia in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Olympia sees daytime highs around 63°F and nights near 48°F. Worth packing: rain gear and sun protection. About 10 days see rain.
UV index in Olympia in May
Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Olympia peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 | 1 | 4 | 5 | 7 | 6 | 8 | 6 | 4 | 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 | 1 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | Very high |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Olympia?
Olympia sits at 47.0°N, 122.9°W, 95 ft above sea level, in United States. The nearest listed city is Tumwater, 2.5 mi away.
Topography around Olympia
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Olympia.
Within 2 miles, the terrain around Olympia has only modest variations in elevation — a maximum elevation change of 364 ft around an average of 135 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,241 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,555 ft.
The land around Olympia is covered by trees (57%) and artificial surfaces (22%) within 2 miles, trees (63%) within 10 miles, and trees (81%) within 50 miles.
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 Olympia (47.0449°, -122.9017°, elevation 95 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).