Artemis II Update - Will Weather Cooperate with Wednesday's Historic Mission to the Moon?

The forecast for the historic Artemis II mission to the moon is currently looking favorable. Should Mother Nature cooperate with the launch, the mission will be the first crewed journey to the moon in over five decades. Here is the latest weather forecast, countdown milestones, and launch timing for the much-anticipated event.

NASA Counting on Hand from Mother Nature for Historic Mission to the Moon

NASA is targeting Wednesday, April 1, as the launch date for the Artemis II mission to the moon. Liftoff is scheduled to happen at 6:24 pm EDT from the Kennedy Space Center in Cape Canaveral, Florida. Four astronauts will be sent to space in what is being billed as the first mission of its kind since the days of Apollo. NASA is hoping that Artemis will jumpstart a new era of lunar exploration.

Artemis II comes on the heels of the uncrewed Artemis I flight in 2022. That mission boasted the first launch of the Space Launch System (SLS) rocket as well as the Orion spacecraft.

As of Tuesday afternoon, the weather forecast was looking favorable for the rocket to launch as planned. Officials have given the launch an 80% chance of being a "Go." The main concerns one day ahead of the mission are cloud cover and wind coming in as part of a breezy onshore flow weather system.

This weather pattern will continue to raise the risk of brief rain showers along the coast throughout the week. The risk of lightning sits at about 5 to 10% due to the weather maker.  

Rain showers are expected earlier in the day in Cape Canaveral. However, the threat of heavy rain or lightning during the launch window is minimal.

Hordes of space enthusiasts are also expected to gather along the Space Coast to watch the launch. Those traveling close to the launch pad to witness the event in person are predicted to see favorable viewing conditions. It will be a pleasant day for temperatures in Cape Canaveral with highs in the upper 70s and overnight lows forecast to slide to about the 70-degree mark. Breezy conditions will produce winds of 10 to 20 mph.

The bulk of the potentially disruptive elements is forecast to remain south of the launch pad. NASA officials will be working with meteorologists to look at a few key possible hazards ahead of the launch. For example, peak liftoff winds must not exceed 33 to 45 mph, depending on the altitude.

Temperatures are also closely monitored in the days and hours leading up to liftoff. The mercury must remain between 41.4 degrees at all times and cannot inch up above 94.5 degrees for more than 30 minutes. This temperature range ensures that the rocket's components and propellants operate within their limits.

Artemis II will not get off the ground if lightning is detected within 10 nautical miles surrounding the flight path. NASA requires a 30-minute clear window before deciding to reset.

Should an errant thunderstorm or other adverse weather event thwart the launch, meteorologists believe that the forecast will become more uncertain for backup options. A more complex weather pattern is forecast to grip Florida beginning on Thursday and lasting through the weekend. This active weather will raise the risk of disruptive clouds and winds should NASA need to delay the launch beyond Wednesday.

Planning to watch in person? This map shows exactly how far the rocket will be visible after liftoff.