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
| 24 August 2026 Mon 20.8 ° C ( 69.4°F )  Sunny |
Feels Like : 21.4 ° C / 70.5°F Humidity : % 80 Pressure : 1013 mb Wind Speed : 10.1 kmph / 6.3 miles from SW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 1 |
15-day weather forecast for Waltham Airport, Waltham, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 24 August 2026 Mon | Sunny |
15 ° C | 30.5 ° C | 22 ° C | % 64 | 19.1 km/h | 5% |
| 25 August 2026 Tue | Sunny |
14.8 ° C | 25.2 ° C | 19.7 ° C | % 63 | 14.8 km/h | 7% |
| 26 August 2026 Wed | Sunny |
13.7 ° C | 28.3 ° C | 20.7 ° C | % 61 | 14 km/h | 4% |
| 27 August 2026 Thu |  Overcast |
16.4 ° C | 30.8 ° C | 22.7 ° C | % 59 | 18.4 km/h | 8% |
| 28 August 2026 Fri | Overcast |
18.1 ° C | 27.1 ° C | 21.7 ° C | % 83 | 11.2 km/h | 72% |
| 29 August 2026 Sat | Sunny |
15.3 ° C | 25.8 ° C | 20 ° C | % 65 | 15.8 km/h | 9% |
| 30 August 2026 Sun | Overcast |
12.6 ° C | 26.1 ° C | 17.7 ° C | % 67 | 13 km/h | 51% |
| 31 August 2026 Mon |  Light rain shower |
17.1 ° C | 24.9 ° C | 19.9 ° C | % 94 | 9.7 km/h | 90% |
| 01 September 2026 Tue | Overcast |
15.9 ° C | 23.5 ° C | 19.1 ° C | % 78 | 12.6 km/h | 22% |
| 02 September 2026 Wed | Overcast |
15.2 ° C | 23.8 ° C | 19.1 ° C | % 80 | 11.2 km/h | 67% |
| 03 September 2026 Thu | Light rain shower |
15.9 ° C | 17.1 ° C | 16.4 ° C | % 98 | 14.4 km/h | 94% |
| 04 September 2026 Fri | Overcast |
15.7 ° C | 21.5 ° C | 17.8 ° C | % 88 | 6.8 km/h | 33% |
| 05 September 2026 Sat |  Fog |
15.2 ° C | 20.5 ° C | 17.3 ° C | % 87 | 10.1 km/h | 65% |
| 06 September 2026 Sun | Overcast |
14.5 ° C | 17.9 ° C | 15.7 ° C | % 81 | 13.3 km/h | 29% |
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