Mercersburg Weather Forecast 15 Days, Weather in Mercersburg Today
Current weather conditions and 15 day weather forecast for Mercersburg, Pennsylvania, 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 Mercersburg
| 01 August 2026 Saturday 30.9 ° C / 87.6°F  Sunny |
Feels Like : 32.2 ° C / 90°F Humidity : % 49 Pressure : 1013 mb Wind Speed : 11.2 kmph / 6.9 miles from SSE  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Mercersburg, PA, USA
Weather Forecast for next 15 Days for Mercersburg 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 Mercersburg, Pennsylvania 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 01 August 2026 Saturday | Sunny |
17.6 ° C (63.7°F) |
33.1 ° C (91.6°F) |
25.2 ° C (77.4°F) |
% 60 | 3% | 7.8 | Sunrise:06:10 AM Sunset: 08:25 PM |
Moonrise:09:59 PM Moonset: 09:14 AM Moon Phase ( Waning Gibbous ) |
|
| 02 August 2026 Sunday |  Light rain |
20 ° C (68.1°F) |
24.3 ° C (75.7°F) |
21 ° C (69.8°F) |
% 91 | 90% | 1.3 | Sunrise:06:11 AM Sunset: 08:24 PM |
Moonrise:10:19 PM Moonset: 10:15 AM Moon Phase ( Waning Gibbous ) |
|
| 03 August 2026 Monday |  Patchy rain nearby |
20.6 ° C (69.1°F) |
28.9 ° C (84°F) |
23.6 ° C (74.5°F) |
% 85 | 85% | 5.4 | Sunrise:06:12 AM Sunset: 08:23 PM |
Moonrise:10:40 PM Moonset: 11:16 AM Moon Phase ( Last Quarter ) |
|
| 04 August 2026 Tuesday |  Mist |
19.8 ° C (67.7°F) |
26.5 ° C (79.6°F) |
22.5 ° C (72.4°F) |
% 91 | 82% | 6.8 | Sunrise:06:13 AM Sunset: 08:22 PM |
Moonrise:11:04 PM Moonset: 12:19 PM Moon Phase ( Last Quarter ) |
|
| 05 August 2026 Wednesday | Patchy rain nearby |
20.8 ° C (69.5°F) |
29.9 ° C (85.8°F) |
24.5 ° C (76°F) |
% 81 | 35% | 7 | Sunrise:06:14 AM Sunset: 08:20 PM |
Moonrise:11:33 PM Moonset: 01:26 PM Moon Phase ( Last Quarter ) |
|
| 06 August 2026 Thursday |  Partly Cloudy |
20.4 ° C (68.8°F) |
33.8 ° C (92.9°F) |
25.6 ° C (78°F) |
% 73 | 64% | 8 | Sunrise:06:15 AM Sunset: 08:19 PM |
Moonrise:Does not rise today Moonset: 02:36 PM Moon Phase ( Last Quarter ) |
|
| 07 August 2026 Friday | Sunny |
20.8 ° C (69.4°F) |
30.8 ° C (87.5°F) |
25.3 ° C (77.5°F) |
% 75 | 47% | 8 | Sunrise:06:16 AM Sunset: 08:18 PM |
Moonrise:12:08 AM Moonset: 03:47 PM Moon Phase ( Waning Crescent ) |
|
| 08 August 2026 Saturday | Patchy rain nearby |
19.7 ° C (67.5°F) |
29.7 ° C (85.4°F) |
23.7 ° C (74.6°F) |
% 81 | 67% | 7 | Sunrise:06:17 AM Sunset: 08:17 PM |
Moonrise:12:53 AM Moonset: 04:57 PM Moon Phase ( Waning Crescent ) |
|
| 09 August 2026 Sunday | Partly Cloudy |
19.1 ° C (66.4°F) |
33.7 ° C (92.7°F) |
25.1 ° C (77.2°F) |
% 74 | 57% | 8 | Sunrise:06:18 AM Sunset: 08:16 PM |
Moonrise:01:50 AM Moonset: 06:00 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Mist |
21.4 ° C (70.5°F) |
30.3 ° C (86.5°F) |
25.1 ° C (77.1°F) |
% 81 | 76% | 7 | Sunrise:06:18 AM Sunset: 08:15 PM |
Moonrise:03:00 AM Moonset: 06:53 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Sunny |
20.9 ° C (69.6°F) |
34.2 ° C (93.6°F) |
26.3 ° C (79.4°F) |
% 75 | 23% | 8 | Sunrise:06:19 AM Sunset: 08:13 PM |
Moonrise:04:19 AM Moonset: 07:37 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Partly Cloudy |
19.2 ° C (66.6°F) |
30.8 ° C (87.4°F) |
24.4 ° C (75.9°F) |
% 70 | 42% | 8 | Sunrise:06:20 AM Sunset: 08:12 PM |
Moonrise:05:41 AM Moonset: 08:11 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Partly Cloudy |
17.3 ° C (63.2°F) |
28.7 ° C (83.7°F) |
23.1 ° C (73.5°F) |
% 69 | 36% | 7 | Sunrise:06:21 AM Sunset: 08:11 PM |
Moonrise:07:01 AM Moonset: 08:41 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday | Patchy rain nearby |
20.5 ° C (68.8°F) |
29.7 ° C (85.4°F) |
24.2 ° C (75.5°F) |
% 81 | 79% | 7 | Sunrise:06:22 AM Sunset: 08:09 PM |
Moonrise:08:19 AM Moonset: 09:07 PM Moon Phase ( Waxing Crescent ) |
|
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