Illinois · Lake fishing

Auxiliary Reservoir

Mar–May, Sep–Nov
best months

Auxiliary Reservoir is a 11-acre reservoir in Illinois, at about 503 feet.

  • Best time to go · Mar–May, Sep–Nov

    Best time to visit Auxiliary Reservoir

    Best months: March–May and September–November. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

    1. Jan

      39° / 22°

      8 wet

    2. Feb

      44° / 25°

      7 wet

    3. Mar

      55° / 35°

      10 wet

    4. Apr

      68° / 45°

      12 wet

    5. May

      76° / 56°

      12 wet

    6. Jun

      86° / 65°

      9 wet

    7. Jul

      88° / 68°

      8 wet

    8. Aug

      87° / 66°

      7 wet

    9. Sep

      81° / 58°

      7 wet

    10. Oct

      69° / 46°

      8 wet

    11. Nov

      55° / 35°

      8 wet

    12. Dec

      44° / 26°

      8 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Rend Lake Dam, IL, 10.7 mi away at 455 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

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