5-day weather forecast Niagara 18-05-2026
Weather forecast Niagara tomorrow 18.05.2026: light rain shower, temperature from 9 °C to 24 °C.
Precipitation probability 100%. Wind up to 6.19 m/s (gusts 8.5 m/s). Air humidity 68–100%, atmospheric pressure 754–758 mm Hg, UV index up to 6.6.
Sunrise 05:17
Sunset 20:20
Sunset 20:20
Waxing Crescent2% illuminated
Moonrise 06:15 · Moonset 23:23
Moonrise 06:15 · Moonset 23:23
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Fog | 9 °C | 100% (0.1 mm/hr) | 100% | 99% | 758 mm Hg | ESE 110° 3.19 (5.14) m/s | 0 |
| 01:00 | Fog | 10 °C | 100% (0.06 mm/hr) | 100% | 99% | 758 mm Hg | ESE 120° 3.11 (5.5) m/s | 0 |
| 02:00 | Fog | 10 °C | 0% | 100% | 99% | 757 mm Hg | SE 126° 2.89 (5.31) m/s | 0 |
| 03:00 | Fog | 11 °C | 0% | 100% | 99% | 756 mm Hg | SE 133° 2.61 (4.97) m/s | 0 |
| 04:00 |  Light rain shower | 12 °C | 100% (1.59 mm/hr) | 100% | 100% | 755 mm Hg | SSE 152° 3.39 (6.11) m/s | 0 |
| 05:00 |  Moderate or heavy rain shower | 13 °C | 100% (2.78 mm/hr) | 100% | 99% | 755 mm Hg | S 172° 3.39 (5.69) m/s | 0 |
| 06:00 |  Light rain shower | 14 °C | 100% (0.82 mm/hr) | 100% | 99% | 755 mm Hg | SSW 192° 2.31 (4.22) m/s | 0 |
| 07:00 | Light rain shower | 14 °C | 100% (1.95 mm/hr) | 100% | 99% | 755 mm Hg | SSW 192° 1.39 (2.69) m/s | 0.2 |
| 08:00 |  Fog | 16 °C | 0% | 100% | 100% | 755 mm Hg | SSE 150° 2.31 (4.14) m/s | 0.6 |
| 09:00 |  Thundery outbreaks possible | 18 °C | 0% | 100% | 97% | 754 mm Hg | S 174° 3.5 (4.97) m/s | 1.6 |
| 10:00 | Thundery outbreaks possible | 19 °C | 0% | 100% | 94% | 754 mm Hg | S 190° 4.69 (6.33) m/s | 1.8 |
| 11:00 |  Moderate or heavy rain with thunder | 20 °C | 100% (1.71 mm/hr) | 100% | 93% | 754 mm Hg | SSW 199° 4.89 (7.08) m/s | 1.9 |
| 12:00 | Thundery outbreaks possible | 20 °C | 100% (0.08 mm/hr) | 100% | 91% | 754 mm Hg | SSW 206° 5 (7.31) m/s | 5 |
| 13:00 | Thundery outbreaks possible | 22 °C | 80% (0.02 mm/hr) | 98% | 89% | 755 mm Hg | SW 218° 5 (8.39) m/s | 2.4 |
| 14:00 | Light rain shower | 23 °C | 100% (1.38 mm/hr) | 55% | 85% | 755 mm Hg | SW 214° 6.19 (8.5) m/s | 6.6 |
| 15:00 |  Patchy rain possible | 24 °C | 100% (0.05 mm/hr) | 76% | 68% | 755 mm Hg | SW 221° 5.89 (7.22) m/s | 4.5 |
| 16:00 | Light rain shower | 23 °C | 100% (1.29 mm/hr) | 87% | 74% | 755 mm Hg | SW 226° 5.39 (7.75) m/s | 3.8 |
| 17:00 |  Patchy light rain with thunder | 23 °C | 100% (0.5 mm/hr) | 79% | 86% | 755 mm Hg | WSW 242° 4.19 (6.03) m/s | 2.2 |
| 18:00 | Thundery outbreaks possible | 22 °C | 68% (0.03 mm/hr) | 79% | 82% | 755 mm Hg | WSW 245° 4.31 (6.72) m/s | 1 |
| 19:00 | Patchy rain possible | 20 °C | 100% (0.15 mm/hr) | 88% | 83% | 755 mm Hg | WSW 248° 3.81 (5.81) m/s | 0.3 |
| 20:00 |  Overcast | 18 °C | 0% | 100% | 92% | 756 mm Hg | W 273° 1.81 (3.58) m/s | 0 |
| 21:00 |  Light rain | 16 °C | 100% (1.71 mm/hr) | 100% | 96% | 757 mm Hg | NNW 327° 3.11 (4.67) m/s | 0 |
| 22:00 | Fog | 15 °C | 100% (0.1 mm/hr) | 100% | 98% | 758 mm Hg | NNW 335° 2.61 (4.03) m/s | 0 |
| 23:00 | Light rain shower | 14 °C | 100% (0.24 mm/hr) | 100% | 97% | 758 mm Hg | N 1° 2.5 (3.53) m/s | 0 |
Niagara 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.