Waltham Airport (WLM) 15 Day Weather Forecast, Waltham United States
Current weather conditions and 15 day weather forecast for Waltham Airport in Waltham, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at WLM
| 20 December 2025 Sat 5.6 ° C ( 42.1°F )  Overcast |
Feels Like : 2.1 ° C / 35.7°F Humidity : % 70 Pressure : 995 mb Wind Speed : 18 kmph / 11.2 miles from W 
Visibility : 16 km Precipitation (rainfall) : 0.06 mm Cloud (%) : 100 |
15-day weather forecast for Waltham Airport, Waltham, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 19 December 2025 Fri |  Moderate rain |
0.8 ° C | 17.1 ° C | 9.7 ° C | % 84 | 42.1 km/h | 89% |
| 20 December 2025 Sat |  Partly Cloudy |
-3.3 ° C | 3.5 ° C | 0.2 ° C | % 61 | 26.3 km/h | 0% |
| 21 December 2025 Sun | Partly Cloudy |
-2.1 ° C | 5.1 ° C | 2.3 ° C | % 72 | 22.7 km/h | 0% |
| 22 December 2025 Mon |  Sunny |
-6.8 ° C | 0.4 ° C | -3 ° C | % 54 | 20.5 km/h | 0% |
| 23 December 2025 Tue |  Heavy snow |
-1.9 ° C | 2.3 ° C | 0.2 ° C | % 88 | 17.3 km/h | 65% |
| 24 December 2025 Wed | Sunny |
-2.3 ° C | 3.4 ° C | 1 ° C | % 80 | 17.3 km/h | 0% |
| 25 December 2025 Thu | Sunny |
-2.7 ° C | 5.5 ° C | 0.3 ° C | % 80 | 12.2 km/h | 0% |
| 26 December 2025 Fri | Moderate rain |
-1.5 ° C | 6.3 ° C | 2.3 ° C | % 90 | 18 km/h | 85% |
| 27 December 2025 Sat | Partly Cloudy |
-3.4 ° C | 5.2 ° C | 2.2 ° C | % 74 | 18 km/h | 0% |
| 28 December 2025 Sun | Sunny |
-4.2 ° C | 0.2 ° C | -2.5 ° C | % 52 | 19.1 km/h | 0% |
| 29 December 2025 Mon | Sunny |
-3.7 ° C | 2.7 ° C | -1.3 ° C | % 50 | 9.7 km/h | 0% |
| 30 December 2025 Tue | Partly Cloudy |
-1.7 ° C | 1.9 ° C | -0.5 ° C | % 59 | 5 km/h | 0% |
| 31 December 2025 Wed | Moderate rain |
-0.7 ° C | 4.3 ° C | 2 ° C | % 92 | 16.6 km/h | 89% |
| 01 January 2026 Thu |  Light freezing rain |
-0.5 ° C | 0.6 ° C | 0.3 ° C | % 93 | 11.5 km/h | 66% |
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