The national weather service (Ukrhydrometcenter), as reported by Proslav, says Kyiv region will be mostly warm on 17 August with variable cloudiness. Nighttime temperatures across the region are expected at 15–20°C and daytime highs of 26–31°C; Kyiv should see about 18–20°C at night and near 30°C by day. Winds will be moderate from the southwest at 5–10 m/s. No precipitation is expected overnight, but short daytime showers are possible in some districts.
The report carries practical advice for residents and gardeners: water plants in the early morning or evening and apply water at the root to reduce evaporation and leaf burn. Harvest ripe tomatoes, peppers, courgettes and early apples promptly and protect stored produce from moisture in case of sudden showers. If onions and garlic remain in the ground, dig and dry them now; consider potassium-phosphorus feeding for fruit trees to support autumn hardening.