Never had any diversions, then had two within three months this year. First was flying FLL-MDW. Snow in Chicago caused a brief (~ 45 minutes) diversion to SDF. Second was BWI-ISP. When we got near ISP it was too foggy to land, so we circled a bit. Then the minimums came up enough for us to try to land, but the fog had other plans, so we went around (another first, but OT here) and diverted to PVD The weather at ISP cleared shortly thereafter, so we were only on the ground for about 1/2 hour. Given how bad diversion delays can be, these were probably about as small as possible.