Jejune weather is a term used to describe the bland, unexciting, and unremarkable weather that we experience from time to time. If you are looking for synonyms to describe this type of weather, there are a few options available. For example, you might describe it as dull, mundane, pedestrian, or uneventful weather. Other options could include unspectacular, unremarkable, or uninspiring. All of these words imply a lack of excitement or vitality, which is often how we feel when we experience a stretch of monotonous and unremarkable weather. Whatever term you choose to describe it, jejune weather can be a bit of a downer for those of us who crave excitement and adventure.