5-day weather forecast Niagara Falls 21-05-2026
Weather forecast Niagara Falls tomorrow 21.05.2026: sunny, temperature from 7 °C to 12 °C.
No precipitation expected. Wind up to 5.5 m/s (gusts 7.53 m/s). Air humidity 42–74%, atmospheric pressure 770–773 mm Hg, UV index up to 4.
Sunrise 05:47
Sunset 20:39
Sunset 20:39
Waxing Crescent24% illuminated
Moonrise 10:36 · Moonset 01:09
Moonrise 10:36 · Moonset 01:09
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 9 °C | 0% | 7% | 63% | 770 mm Hg | NNW 348° 2.69 (4.83) m/s | 0 |
| 01:00 | Clear | 8 °C | 0% | 4% | 65% | 770 mm Hg | N 350° 2.69 (4.61) m/s | 0 |
| 02:00 | Clear | 8 °C | 0% | 5% | 67% | 770 mm Hg | N 356° 2.89 (4.86) m/s | 0 |
| 03:00 | Clear | 7 °C | 0% | 9% | 69% | 770 mm Hg | N 2° 3.19 (5.25) m/s | 0 |
| 04:00 | Clear | 7 °C | 0% | 10% | 72% | 770 mm Hg | NNE 18° 3.5 (5.72) m/s | 0 |
| 05:00 | Clear | 7 °C | 0% | 10% | 74% | 771 mm Hg | NE 36° 4.31 (6.81) m/s | 0 |
| 06:00 |  Sunny | 7 °C | 0% | 6% | 74% | 771 mm Hg | NE 50° 4.81 (7.53) m/s | 0 |
| 07:00 | Sunny | 7 °C | 0% | 4% | 70% | 772 mm Hg | NE 51° 5.11 (7.39) m/s | 0.2 |
| 08:00 | Sunny | 8 °C | 0% | 5% | 63% | 773 mm Hg | NE 54° 5.5 (7.33) m/s | 0.8 |
| 09:00 | Sunny | 8 °C | 0% | 7% | 58% | 773 mm Hg | NE 54° 5.5 (6.83) m/s | 3 |
| 10:00 | Sunny | 9 °C | 0% | 11% | 54% | 773 mm Hg | NE 49° 5.19 (5.97) m/s | 3 |
| 11:00 | Sunny | 10 °C | 0% | 17% | 51% | 773 mm Hg | NE 46° 5 (5.75) m/s | 3 |
| 12:00 |  Partly cloudy | 10 °C | 0% | 32% | 48% | 773 mm Hg | NE 43° 4.89 (5.64) m/s | 4 |
| 13:00 | Sunny | 11 °C | 0% | 21% | 45% | 773 mm Hg | NE 46° 4.61 (5.28) m/s | 4 |
| 14:00 | Partly cloudy | 11 °C | 0% | 27% | 43% | 772 mm Hg | NE 42° 4.39 (5.06) m/s | 4 |
| 15:00 | Sunny | 12 °C | 0% | 20% | 42% | 772 mm Hg | NE 45° 4.19 (4.97) m/s | 4 |
| 16:00 | Sunny | 12 °C | 0% | 8% | 42% | 771 mm Hg | NE 46° 4.31 (5.33) m/s | 4 |
| 17:00 | Sunny | 12 °C | 0% | 2% | 44% | 771 mm Hg | NE 51° 4.19 (5.5) m/s | 4 |
| 18:00 | Sunny | 12 °C | 0% | 0% | 48% | 771 mm Hg | ENE 60° 3.89 (5.5) m/s | 4 |
| 19:00 | Sunny | 11 °C | 0% | 0% | 55% | 771 mm Hg | ENE 70° 3.39 (5.19) m/s | 4 |
| 20:00 | Sunny | 10 °C | 0% | 0% | 61% | 771 mm Hg | E 88° 2.69 (4.75) m/s | 4 |
| 21:00 | Clear | 9 °C | 0% | 0% | 63% | 771 mm Hg | E 97° 2.5 (4.92) m/s | 0 |
| 22:00 | Clear | 8 °C | 0% | 0% | 64% | 771 mm Hg | ESE 103° 2.11 (4.28) m/s | 0 |
| 23:00 | Clear | 8 °C | 0% | 0% | 64% | 771 mm Hg | ESE 104° 2.31 (4.81) m/s | 0 |
Niagara Falls on the map
Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.