It's followed by Av, which is even heavier (at least the first 10 days, anyway).
Unlike astrologers, Judaism knows that the astrological influences are not the deciding factors in our lives.
Hashem created the system & He can easily override it.
Just like Hashem removed 2 stars from the Kimah [כִּימָה] (Pleiades) constellation & caused it to rise during the day to enable the Mabul/Flood to happen (Rosh Hashanah 11b), He can rearrange any planetary bodies or orbits necessary to bring about the desired result.
So the astrological influences do not control us.
But just like a change in barometric pressure can cause headaches or a lack of sunlight can cause depression, the position of astronomical bodies also affect us, even as "there is no mazal in Yisrael" — we aren't ruled by the constellations.
If you'd like some help in understanding & dealing with Tammuz (and Av!), you can check out the following posts: