Alton Bay Seaplane Base Weather Forecast 15 Days, Weather in B18 Today
Current weather conditions and 15 day weather forecast for Alton Bay Seaplane Base, New Hampshire, 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 Alton Bay Seaplane Base
| 26 September 2026 Saturday 12.4 ° C / 54.4°F  Overcast |
Feels Like : 10.2 ° C / 50.4°F Humidity : % 69 Pressure : 1019 mb Wind Speed : 10.8 kmph / 6.7 miles from NE  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Alton Bay Seaplane Base, NH, USA
Weather Forecast for next 15 Days for Alton Bay Seaplane Base 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 Alton Bay Seaplane Base, New Hampshire 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26 September 2026 Saturday | Overcast |
10.3 ° C (50.6°F) |
16.4 ° C (61.5°F) |
12.4 ° C (54.2°F) |
% 77 | 86% | 3.2 | Sunrise:06:36 AM Sunset: 06:35 PM |
Moonrise:06:22 PM Moonset: 06:34 AM Moon Phase ( Full Moon ) |
|
| 27 September 2026 Sunday |  Patchy rain nearby |
8.8 ° C (47.9°F) |
10.6 ° C (51.1°F) |
9.7 ° C (49.4°F) |
% 97 | 93% | 0.6 | Sunrise:06:37 AM Sunset: 06:33 PM |
Moonrise:06:42 PM Moonset: 07:40 AM Moon Phase ( Waning Gibbous ) |
|
| 28 September 2026 Monday | Patchy rain nearby |
9 ° C (48.3°F) |
10.5 ° C (51°F) |
9.6 ° C (49.2°F) |
% 98 | 93% | 0.8 | Sunrise:06:39 AM Sunset: 06:32 PM |
Moonrise:07:04 PM Moonset: 08:48 AM Moon Phase ( Waning Gibbous ) |
|
| 29 September 2026 Tuesday |  Light rain shower |
9.2 ° C (48.6°F) |
11.8 ° C (53.3°F) |
10.4 ° C (50.7°F) |
% 99 | 95% | 0.4 | Sunrise:06:40 AM Sunset: 06:30 PM |
Moonrise:07:32 PM Moonset: 09:59 AM Moon Phase ( Waning Gibbous ) |
|
| 30 September 2026 Wednesday | Patchy rain nearby |
11.4 ° C (52.5°F) |
18.5 ° C (65.4°F) |
15.1 ° C (59.2°F) |
% 86 | 35% | 4 | Sunrise:06:41 AM Sunset: 06:28 PM |
Moonrise:08:07 PM Moonset: 11:11 AM Moon Phase ( Waning Gibbous ) |
|
| 01 October 2026 Thursday |  Sunny |
14.2 ° C (57.6°F) |
21.9 ° C (71.5°F) |
17.5 ° C (63.6°F) |
% 75 | 11% | 6 | Sunrise:06:42 AM Sunset: 06:26 PM |
Moonrise:08:52 PM Moonset: 12:23 PM Moon Phase ( Last Quarter ) |
|
| 02 October 2026 Friday | Overcast |
13.1 ° C (55.5°F) |
23.3 ° C (73.9°F) |
17.9 ° C (64.2°F) |
% 81 | 20% | 5 | Sunrise:06:43 AM Sunset: 06:24 PM |
Moonrise:09:49 PM Moonset: 01:29 PM Moon Phase ( Last Quarter ) |
|
| 03 October 2026 Saturday | Sunny |
17.7 ° C (63.8°F) |
28 ° C (82.4°F) |
22.1 ° C (71.8°F) |
% 78 | 36% | 7 | Sunrise:06:44 AM Sunset: 06:23 PM |
Moonrise:10:58 PM Moonset: 02:25 PM Moon Phase ( Last Quarter ) |
|
| 04 October 2026 Sunday |  Fog |
10.7 ° C (51.2°F) |
20.7 ° C (69.3°F) |
14.1 ° C (57.5°F) |
% 97 | 92% | 3 | Sunrise:06:46 AM Sunset: 06:21 PM |
Moonrise:Does not rise today Moonset: 03:11 PM Moon Phase ( Last Quarter ) |
|
| 05 October 2026 Monday | Fog |
10.7 ° C (51.3°F) |
13.1 ° C (55.6°F) |
12.1 ° C (53.8°F) |
% 92 | 93% | 3 | Sunrise:06:47 AM Sunset: 06:19 PM |
Moonrise:12:14 AM Moonset: 03:47 PM Moon Phase ( Waning Crescent ) |
|
| 06 October 2026 Tuesday | Patchy rain nearby |
4.6 ° C (40.2°F) |
14.3 ° C (57.8°F) |
11.4 ° C (52.5°F) |
% 88 | 87% | 3 | Sunrise:06:48 AM Sunset: 06:17 PM |
Moonrise:01:34 AM Moonset: 04:17 PM Moon Phase ( Waning Crescent ) |
|
| 07 October 2026 Wednesday | Patchy rain nearby |
1.2 ° C (34.1°F) |
4.8 ° C (40.7°F) |
2.9 ° C (37.2°F) |
% 66 | 22% | 1 | Sunrise:06:49 AM Sunset: 06:15 PM |
Moonrise:02:54 AM Moonset: 04:42 PM Moon Phase ( Waning Crescent ) |
|
| 08 October 2026 Thursday |  Cloudy |
-0.4 ° C (31.3°F) |
8.6 ° C (47.6°F) |
3.6 ° C (38.5°F) |
% 57 | 8% | 3 | Sunrise:06:50 AM Sunset: 06:14 PM |
Moonrise:04:13 AM Moonset: 05:04 PM Moon Phase ( Waning Crescent ) |
|
| 09 October 2026 Friday | Light rain shower |
0.1 ° C (32.1°F) |
10.5 ° C (50.9°F) |
2.3 ° C (36.1°F) |
% 89 | 91% | 1 | Sunrise:06:51 AM Sunset: 06:12 PM |
Moonrise:05:30 AM Moonset: 05:26 PM Moon Phase ( New Moon ) |
|
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