Grantham Weather Forecast 15 Days, Weather in Grantham Today
Current weather conditions and 15 day weather forecast for Grantham, 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 Grantham
| 06 February 2026 Friday -14.4 ° C / 6.1°F  Clear |
Feels Like : -17.1 ° C / 1.2°F Humidity : % 72 Pressure : 1013 mb Wind Speed : 4 kmph / 2.5 miles from NNE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Grantham, NH, USA
Weather Forecast for next 15 Days for Grantham 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 Grantham, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 06 February 2026 Friday |  Partly Cloudy |
-14.4 ° C (6.1°F) |
-4.9 ° C (23.2°F) |
-9.3 ° C (15.3°F) |
% 68 | 0% | 0.3 | Sunrise:06:59 AM Sunset: 05:07 PM |
Moonrise:10:43 PM Moonset: 08:58 AM Moon Phase ( Waning Gibbous ) |
|
| 07 February 2026 Saturday |  Overcast |
-20.6 ° C (-5°F) |
-5.9 ° C (21.4°F) |
-10.9 ° C (12.4°F) |
% 81 | 0% | 0.2 | Sunrise:06:58 AM Sunset: 05:08 PM |
Moonrise:11:49 PM Moonset: 09:17 AM Moon Phase ( Waning Gibbous ) |
|
| 08 February 2026 Sunday | Sunny |
-24.7 ° C (-12.5°F) |
-13.4 ° C (7.9°F) |
-19.6 ° C (-3.3°F) |
% 61 | 0% | 0.4 | Sunrise:06:57 AM Sunset: 05:10 PM |
Moonrise:No moonrise Moonset: 09:39 AM Moon Phase ( Waning Gibbous ) |
|
| 09 February 2026 Monday | Partly Cloudy |
-26.1 ° C (-15°F) |
-9.8 ° C (14.4°F) |
-18.1 ° C (-0.7°F) |
% 83 | 0% | 0.4 | Sunrise:06:55 AM Sunset: 05:11 PM |
Moonrise:12:55 AM Moonset: 10:05 AM Moon Phase ( Last Quarter ) |
|
| 10 February 2026 Tuesday | Partly Cloudy |
-22.9 ° C (-9.2°F) |
-7.4 ° C (18.7°F) |
-16.2 ° C (2.8°F) |
% 88 | 0% | 0 | Sunrise:06:54 AM Sunset: 05:12 PM |
Moonrise:02:00 AM Moonset: 10:37 AM Moon Phase ( Waning Crescent ) |
|
| 11 February 2026 Wednesday |  Light freezing rain |
-19.6 ° C (-3.2°F) |
-4.4 ° C (24.1°F) |
-10.5 ° C (13.1°F) |
% 92 | 74% | 1 | Sunrise:06:53 AM Sunset: 05:14 PM |
Moonrise:03:03 AM Moonset: 11:17 AM Moon Phase ( Waning Crescent ) |
|
| 12 February 2026 Thursday |  Light snow |
-11.8 ° C (10.7°F) |
-3.8 ° C (25.2°F) |
-8.4 ° C (16.8°F) |
% 92 | 81% | 1 | Sunrise:06:51 AM Sunset: 05:15 PM |
Moonrise:04:00 AM Moonset: 12:06 PM Moon Phase ( Waning Crescent ) |
|
| 13 February 2026 Friday | Light snow |
-7.9 ° C (17.8°F) |
-1.6 ° C (29°F) |
-4.5 ° C (24°F) |
% 85 | 60% | 1 | Sunrise:06:50 AM Sunset: 05:16 PM |
Moonrise:04:49 AM Moonset: 01:05 PM Moon Phase ( Waning Crescent ) |
|
| 14 February 2026 Saturday | Partly Cloudy |
-10.5 ° C (13.1°F) |
-0.4 ° C (31.2°F) |
-5.4 ° C (22.4°F) |
% 83 | 0% | 2 | Sunrise:06:48 AM Sunset: 05:18 PM |
Moonrise:05:30 AM Moonset: 02:10 PM Moon Phase ( Waning Crescent ) |
|
| 15 February 2026 Sunday | Partly Cloudy |
-12.2 ° C (10°F) |
-0.2 ° C (31.7°F) |
-7.2 ° C (19°F) |
% 90 | 0% | 2 | Sunrise:06:47 AM Sunset: 05:19 PM |
Moonrise:06:04 AM Moonset: 03:20 PM Moon Phase ( Waning Crescent ) |
|
| 16 February 2026 Monday |  Cloudy |
-14.1 ° C (6.6°F) |
1.6 ° C (34.9°F) |
-6.6 ° C (20.1°F) |
% 93 | 0% | 1 | Sunrise:06:45 AM Sunset: 05:21 PM |
Moonrise:06:31 AM Moonset: 04:32 PM Moon Phase ( Waning Crescent ) |
|
| 17 February 2026 Tuesday |  Light drizzle |
-4.6 ° C (23.8°F) |
2.7 ° C (36.9°F) |
-0.1 ° C (31.8°F) |
% 94 | 75% | 1 | Sunrise:06:44 AM Sunset: 05:22 PM |
Moonrise:06:54 AM Moonset: 05:44 PM Moon Phase ( New Moon ) |
|
| 18 February 2026 Wednesday | Light drizzle |
-1.3 ° C (29.7°F) |
3.4 ° C (38.1°F) |
0.5 ° C (32.9°F) |
% 98 | 81% | 1 | Sunrise:06:42 AM Sunset: 05:23 PM |
Moonrise:07:15 AM Moonset: 06:56 PM Moon Phase ( Waxing Crescent ) |
|
| 19 February 2026 Thursday | Light freezing rain |
-11 ° C (12.2°F) |
-7.5 ° C (18.5°F) |
-8.3 ° C (17.1°F) |
% 74 | 69% | 1 | Sunrise:06:41 AM Sunset: 05:25 PM |
Moonrise:07:35 AM Moonset: 08:08 PM Moon Phase ( Waxing Crescent ) |
|
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