Last updated: March 2, 2024
The weather in Altoona, United States, during April is characterized by an average temperature of 17°C (62°F). Highs can soar to 29°C (84°F), while lows may dip to 2°C (36°F). Typically, the humidity level in Altoona throughout April hovers around 82%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In April, Altoona averages 157 mm (6.2 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 13 hours 3 minutes of daylight, with the sun shining for approximately 9 hours 13 minutes each day. Additionally, there is a 53% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In April, the UV Index in Altoona reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 2 | 4 | 6 | 9 | 10 | 10 | 9 | 7 | 4 | 2 | 1 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||