Waltham Weather Forecast 15 Days, Weather in Waltham Today
Current weather conditions and 15 day weather forecast for Waltham, Massachusetts, 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 Waltham
| 25 December 2025 Thursday -1.7 ° C / 28.9°F  Overcast |
Feels Like : -3 ° C / 26.7°F Humidity : % 69 Pressure : 1025 mb Wind Speed : 4 kmph / 2.5 miles from NNE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Waltham, MA, USA
Weather Forecast for next 15 Days for Waltham 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 Waltham, Massachusetts 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 24 December 2025 Wednesday |  Moderate or heavy snow showers |
-1.4 ° C (29.5°F) |
2.7 ° C (36.9°F) |
0.6 ° C (33°F) |
% 83 | 86% | 0.2 | Sunrise:07:13 AM Sunset: 04:17 PM |
Moonrise:10:17 AM Moonset: 08:54 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Sunny |
-6.5 ° C (20.2°F) |
3.1 ° C (37.6°F) |
-0.8 ° C (30.5°F) |
% 71 | 0% | 0.1 | Sunrise:07:13 AM Sunset: 04:18 PM |
Moonrise:10:39 AM Moonset: 10:03 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Sunny |
-12.2 ° C (10°F) |
-7.2 ° C (19°F) |
-8.8 ° C (16.1°F) |
% 52 | 0% | 0.2 | Sunrise:07:13 AM Sunset: 04:18 PM |
Moonrise:11:00 AM Moonset: 11:12 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Partly Cloudy |
-8 ° C (17.6°F) |
-1.3 ° C (29.7°F) |
-5.3 ° C (22.5°F) |
% 56 | 0% | 0.2 | Sunrise:07:14 AM Sunset: 04:19 PM |
Moonrise:11:21 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Sunny |
-6.3 ° C (20.7°F) |
3.1 ° C (37.5°F) |
-2.5 ° C (27.5°F) |
% 54 | 0% | 0.2 | Sunrise:07:14 AM Sunset: 04:20 PM |
Moonrise:11:43 AM Moonset: 12:23 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday |  Moderate rain |
-2.2 ° C (28.1°F) |
7.4 ° C (45.4°F) |
2.1 ° C (35.7°F) |
% 81 | 80% | 0 | Sunrise:07:14 AM Sunset: 04:20 PM |
Moonrise:12:08 PM Moonset: 01:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Overcast |
-4.1 ° C (24.6°F) |
-0.4 ° C (31.4°F) |
-2.6 ° C (27.4°F) |
% 57 | 0% | 1 | Sunrise:07:14 AM Sunset: 04:21 PM |
Moonrise:12:39 PM Moonset: 02:57 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Sunny |
-5 ° C (23°F) |
0.6 ° C (33.1°F) |
-2.5 ° C (27.6°F) |
% 60 | 0% | 2 | Sunrise:07:14 AM Sunset: 04:22 PM |
Moonrise:01:20 PM Moonset: 04:18 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday |  Light freezing rain |
-2.7 ° C (27.1°F) |
3.2 ° C (37.8°F) |
-0.3 ° C (31.4°F) |
% 72 | 64% | 1 | Sunrise:07:14 AM Sunset: 04:23 PM |
Moonrise:02:13 PM Moonset: 05:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday |  Cloudy |
-3.4 ° C (25.9°F) |
0.5 ° C (32.8°F) |
-1.8 ° C (28.8°F) |
% 54 | 0% | 1 | Sunrise:07:15 AM Sunset: 04:24 PM |
Moonrise:03:20 PM Moonset: 06:49 AM Moon Phase ( Waxing Gibbous ) |
|
| 03 January 2026 Saturday |  Patchy rain nearby |
-1.3 ° C (29.6°F) |
4.1 ° C (39.4°F) |
1.9 ° C (35.4°F) |
% 91 | 84% | 1 | Sunrise:07:15 AM Sunset: 04:25 PM |
Moonrise:04:37 PM Moonset: 07:47 AM Moon Phase ( Full Moon ) |
|
| 04 January 2026 Sunday | Partly Cloudy |
-0.8 ° C (30.5°F) |
8.3 ° C (46.9°F) |
4.4 ° C (40°F) |
% 83 | 0% | 2 | Sunrise:07:15 AM Sunset: 04:26 PM |
Moonrise:05:57 PM Moonset: 08:31 AM Moon Phase ( Waning Gibbous ) |
|
| 05 January 2026 Monday | Sunny |
-3 ° C (26.6°F) |
1.1 ° C (34°F) |
-1.4 ° C (29.4°F) |
% 54 | 0% | 2 | Sunrise:07:14 AM Sunset: 04:27 PM |
Moonrise:07:15 PM Moonset: 09:06 AM Moon Phase ( Waning Gibbous ) |
|
| 06 January 2026 Tuesday | Sunny |
-7.4 ° C (18.8°F) |
-2.9 ° C (26.7°F) |
-4.8 ° C (23.4°F) |
% 44 | 0% | 2 | Sunrise:07:14 AM Sunset: 04:28 PM |
Moonrise:08:28 PM Moonset: 09:33 AM Moon Phase ( Waning Gibbous ) |
|
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