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
| 12 September 2026 Sat 22.4 ° C ( 72.3°F )  Overcast |
Feels Like : 20.3 ° C / 68.5°F Humidity : % 48 Pressure : 1018 mb Wind Speed : 12.6 kmph / 7.8 miles from E 
Visibility : 10 km Precipitation (rainfall) : 0 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 |
|---|---|---|---|---|---|---|---|
| 12 September 2026 Sat |  Sunny |
9.6 ° C | 28.2 ° C | 17.7 ° C | % 62 | 13.3 km/h | 6% |
| 13 September 2026 Sun | Overcast |
15.3 ° C | 18.4 ° C | 17.1 ° C | % 93 | 9 km/h | 92% |
| 14 September 2026 Mon | Sunny |
11.9 ° C | 21.5 ° C | 17.1 ° C | % 61 | 16.6 km/h | 5% |
| 15 September 2026 Tue | Sunny |
9.2 ° C | 19.7 ° C | 14.2 ° C | % 65 | 13.3 km/h | 7% |
| 16 September 2026 Wed | Overcast |
10.1 ° C | 25.4 ° C | 17.8 ° C | % 64 | 12.2 km/h | 11% |
| 17 September 2026 Thu | Overcast |
14.8 ° C | 26.8 ° C | 19.1 ° C | % 70 | 16.2 km/h | 63% |
| 18 September 2026 Fri |  Light rain shower |
13.9 ° C | 17.5 ° C | 16.1 ° C | % 99 | 10.4 km/h | 95% |
| 19 September 2026 Sat |  Mist |
14 ° C | 23.1 ° C | 17.1 ° C | % 83 | 9.4 km/h | 23% |
| 20 September 2026 Sun | Overcast |
14.6 ° C | 22.9 ° C | 17.9 ° C | % 83 | 16.2 km/h | 59% |
| 21 September 2026 Mon | Overcast |
8.5 ° C | 15.7 ° C | 12.2 ° C | % 55 | 19.4 km/h | 8% |
| 22 September 2026 Tue | Overcast |
8.6 ° C | 16.8 ° C | 12.6 ° C | % 76 | 24.5 km/h | 85% |
| 23 September 2026 Wed |  Patchy rain nearby |
13.5 ° C | 18.7 ° C | 15.9 ° C | % 85 | 18.7 km/h | 86% |
| 24 September 2026 Thu | Sunny |
11.7 ° C | 21.9 ° C | 17.6 ° C | % 69 | 22.7 km/h | 57% |
| 25 September 2026 Fri | Sunny |
8.1 ° C | 17.6 ° C | 12.3 ° C | % 53 | 13.3 km/h | 2% |
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