Loudoun County Weather Outlook for Saturday, June 21, 2025

6/21/2025

🔥🌞 Full-On Summer Heat Arrives!

Welcome to the first full day of summer, and it’s bringing the heat in a big way!

🌡️ Today: Hot and Humid

Highs near 90°F, but with thick humidity, it’ll feel more like the low to mid-90s.

🥵 Sunday Through Wednesday: Intense Heat Wave

We’re locked into a dangerous heat pattern:

Sunday: Highs in the mid-90s, with heat indices around 100–104°F

Monday–Wednesday: Actual highs could touch 100°F, with heat indices potentially 105°F or higher

🌦️ Thursday–Friday: Slight Rain Chances

By Thursday, we may see some relief with scattered showers or storms as the ridge starts to break down. Highs drop slightly to the low to mid-90s, but it’ll still feel tropical with heat indices staying elevated.

📅 Long Range Outlook

Unfortunately, the heat looks to hang tough into the end of June. We're hoping for some sort of break by the 4th of July, but that’s not a sure thing just yet.

🔥 Stay safe and stay cool—this is a stretch of heat we need to take seriously!

The forecast:

Today: Hi 89 ⛅ Lo 70 🌙 – 🌡️ Hot and mostly sunny during the day, becoming pleasant and mostly clear tonight

Sunday: Hi 96 🥵 ☀️ Lo 74 🌙 – Sunny and very hot

Monday: Hi 97 🌡️ ☀️ Lo 76 🌙 – Sunny and hot

Tuesday: Hi 98 🌡️ ☀️ Lo 75 ☁️ – Sunny and extremely hot

Wednesday: Hi 96 🥵 ☀️ Lo 73 ☁️ – Mostly sunny and hot

Thursday: Hi 93 🌦️40% Lo 73 🌧️30% – Mostly sunny with scattered showers and storms

Friday: Hi 93 🌦️40% Lo 71 🌧️ – Mostly sunny with scattered showers and storms