The Boston Marathon has announced several adjustments for the world’s oldest annual marathon because of the stormy weather forecast.

Organizers of the 123rd race are preparing for rain, strong winds and morning temperatures in the 30s on Monday, with the potential for windchills in the low 30s.

There will be additional medical vehicles to pick up athletes who can’t complete the course. Tent walls and heat will be added at the staging areas and additional ponchos. And hand warmers will be distributed to volunteers.

Desiree Linden, left, of Washington, Mich., and Yuki Kawauchi, of Japan, display their assigned bib numbers during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Desiree Linden, left, of Washington, Mich., and Yuki Kawauchi, of Japan, display their assigned bib numbers during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)

Organizers also eliminated a 25-minute gap in the start times for two waves of runners.

If the forecast holds, it will be the second year in a row that the race has been plagued by rainy, windy and generally miserable conditions.

Desiree Linden, left, of Washington, Mich., and Yuki Kawauchi, of Japan, receive their assigned bib numbers during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Desiree Linden, left, of Washington, Mich., and Yuki Kawauchi, of Japan, receive their assigned bib numbers during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Hayato Sonoda, left, and Hiroto Inoue, both of Japan, stand on the stage during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Hayato Sonoda, left, and Hiroto Inoue, both of Japan, stand on the stage during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Yuki Kawauchi, center, of Japan, sits on the stage during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Yuki Kawauchi, center, of Japan, sits on the stage during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
From left Tatyana McFadden, of Clarksville, Md., Desiree Linden, of Washington, Mich., Yuki Kawauchi, center, of Japan, and Marcel Hug, of Switzerland, hold their name signs during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
From left Tatyana McFadden, of Clarksville, Md., Desiree Linden, of Washington, Mich., Yuki Kawauchi, center, of Japan, and Marcel Hug, of Switzerland, hold their name signs during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Hiroto Inoue, of Japan, stands on the stage during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Hiroto Inoue, of Japan, stands on the stage during a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Elite runners Hiroto Inoue, left, Yuki Kawauchi, center, and Hayato Sonoda, all of Japan, pose for a photo after a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Elite runners Hiroto Inoue, left, Yuki Kawauchi, center, and Hayato Sonoda, all of Japan, pose for a photo after a media availability on Friday, April 12, 2019, in Boston in advance of the 123rd Boston Marathon on Monday. (AP Photo/Charles Krupa)
Will Belazoos, left, and Connor Freitas, of Road Safe Traffic Systems, paint the starting line Thursday, April 11, 2019, in Hopkinton, Mass. (Art Illman/The Metro West Daily News via AP)
Will Belazoos, left, and Connor Freitas, of Road Safe Traffic Systems, paint the starting line Thursday, April 11, 2019, in Hopkinton, Mass. (Art Illman/The Metro West Daily News via AP)
Belazoos of Road Safe Traffic Systems carries a stencil as they paint the starting line Thursday, April 11, 2019, in Hopkinton, Mass. (Art Illman/The Metro West Daily News via AP)
Belazoos of Road Safe Traffic Systems carries a stencil as they paint the starting line Thursday, April 11, 2019, in Hopkinton, Mass. (Art Illman/The Metro West Daily News via AP)