The CoCoRaHS RAIN GAUGE RALLY 2026 kicks off on April 1st! 30 days of April showers & a celebration of Citizen Science Month!
The CoCoRaHS Rain Gauge Rally is our friendly recruiting contest to see who can recruit the most new volunteers during the 30 days of April.
There is always a need for more observations, as the saying goes: "the rain doesn't fall the same on all." Due to precipitation variability, amounts measured can vary significantly, even within a block or two. Help fill in the gaps by recruiting a friend or relative during our contest. The more observations, the clearer the picture, the better the understanding of where it did and did not rain.
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