Sammamish Weather Forecast 15 Days, Weather in Sammamish Today
Current weather conditions and 15 day weather forecast for Sammamish, Washington, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Sammamish
| 15 May 2026 Friday 10.1 ° C / 50.2°F  Partly cloudy |
Feels Like : 8.9 ° C / 47.9°F Humidity : % 83 Pressure : 1021 mb Wind Speed : 9.4 kmph / 5.8 miles from S  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for Sammamish, WA, USA
Weather Forecast for next 15 Days for Sammamish including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Sammamish, Washington state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 May 2026 Friday |  Moderate rain |
7.2 ° C (45°F) |
11.8 ° C (53.2°F) |
9.2 ° C (48.5°F) |
% 84 | 92% | 2.1 | Sunrise:05:31 AM Sunset: 08:39 PM |
Moonrise:04:22 AM Moonset: 07:56 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Moderate rain |
4.7 ° C (40.5°F) |
11.8 ° C (53.3°F) |
8.3 ° C (46.9°F) |
% 87 | 89% | 4.8 | Sunrise:05:30 AM Sunset: 08:41 PM |
Moonrise:04:52 AM Moonset: 09:25 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday |  Patchy rain nearby |
5.7 ° C (42.3°F) |
15.6 ° C (60.1°F) |
10.1 ° C (50.2°F) |
% 68 | 82% | 5.2 | Sunrise:05:29 AM Sunset: 08:42 PM |
Moonrise:05:32 AM Moonset: 10:47 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Patchy rain nearby |
5.6 ° C (42°F) |
17.2 ° C (63°F) |
11.4 ° C (52.5°F) |
% 66 | 70% | 5.5 | Sunrise:05:27 AM Sunset: 08:43 PM |
Moonrise:06:26 AM Moonset: 11:55 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday | Patchy rain nearby |
7.8 ° C (46.1°F) |
18.4 ° C (65°F) |
11.6 ° C (52.8°F) |
% 82 | 82% | 0 | Sunrise:05:26 AM Sunset: 08:44 PM |
Moonrise:07:38 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday |  Sunny |
5.8 ° C (42.5°F) |
21.9 ° C (71.4°F) |
14 ° C (57.2°F) |
% 71 | 0% | 4 | Sunrise:05:25 AM Sunset: 08:46 PM |
Moonrise:08:59 AM Moonset: 12:45 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Sunny |
9.2 ° C (48.6°F) |
27.2 ° C (80.9°F) |
17.7 ° C (63.8°F) |
% 63 | 0% | 5 | Sunrise:05:24 AM Sunset: 08:47 PM |
Moonrise:10:23 AM Moonset: 01:21 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Partly Cloudy |
9.1 ° C (48.4°F) |
19.6 ° C (67.2°F) |
13.8 ° C (56.9°F) |
% 62 | 0% | 4 | Sunrise:05:23 AM Sunset: 08:48 PM |
Moonrise:11:44 AM Moonset: 01:48 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday |  Overcast |
8.1 ° C (46.7°F) |
17.9 ° C (64.2°F) |
12 ° C (53.5°F) |
% 60 | 0% | 3 | Sunrise:05:22 AM Sunset: 08:49 PM |
Moonrise:01:00 PM Moonset: 02:08 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Partly Cloudy |
5.5 ° C (41.9°F) |
19.4 ° C (66.9°F) |
12.4 ° C (54.3°F) |
% 67 | 0% | 4 | Sunrise:05:21 AM Sunset: 08:50 PM |
Moonrise:02:13 PM Moonset: 02:24 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 May 2026 Monday | Patchy rain nearby |
5.7 ° C (42.2°F) |
12.3 ° C (54.1°F) |
9.1 ° C (48.3°F) |
% 80 | 89% | 2 | Sunrise:05:20 AM Sunset: 08:51 PM |
Moonrise:03:23 PM Moonset: 02:39 AM Moon Phase ( Waxing Gibbous ) |
|
| 26 May 2026 Tuesday | Partly Cloudy |
4.8 ° C (40.7°F) |
16.2 ° C (61.2°F) |
10 ° C (50°F) |
% 62 | 0% | 4 | Sunrise:05:19 AM Sunset: 08:52 PM |
Moonrise:04:32 PM Moonset: 02:55 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 May 2026 Wednesday | Partly Cloudy |
2.8 ° C (37°F) |
18.7 ° C (65.7°F) |
11.2 ° C (52.1°F) |
% 63 | 0% | 4 | Sunrise:05:18 AM Sunset: 08:54 PM |
Moonrise:05:42 PM Moonset: 03:10 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 May 2026 Thursday | Sunny |
4.4 ° C (39.9°F) |
21.9 ° C (71.5°F) |
13.5 ° C (56.2°F) |
% 60 | 0% | 4 | Sunrise:05:18 AM Sunset: 08:55 PM |
Moonrise:06:51 PM Moonset: 03:28 AM Moon Phase ( Waxing Gibbous ) |
|
Add a link to your web page; copy and paste this html to your web page