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What is Castana, IA, Weather Like in October?
During the month of October, Castana, IA,
has an average daytime high temperature of 63°F and an average overnight low temperature dropping to 40°F.
Around 2.43 inches of precipitation is received during the month,
with about 29.58 inches falling in a typical year.
0.70 inches of snow is the mean amount received during October.
Annually, Castana receives around 20.90 inches of snow.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 21, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 73.3 F
(+7.8 vs avg)
Average Low: 52.5 F
(+10.3 vs avg)
This month was significantly warmer than average.
Actual data from: MID_CNAI4
Castana, IA Daily Weather Averages for October
Recorded at Castana Exp Farm
(usc00131277),
3.8 miles
ESE of
Castana, IA
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 46 F | 70 F | 58 F | 0.10" | 27.25" | 0.00" | 20.20" | 7.8 F | 1 F |
| 10/2 | 46 F | 70 F | 58 F | 0.20" | 27.35" | 0.00" | 20.20" | 8.1 F | 0.9 F |
| 10/3 | 46 F | 69 F | 57 F | 0.30" | 27.45" | 0.00" | 20.20" | 8.5 F | 0.9 F |
| 10/4 | 45 F | 69 F | 57 F | 0.40" | 27.55" | 0.00" | 20.20" | 8.9 F | 0.8 F |
| 10/5 | 45 F | 68 F | 57 F | 0.49" | 27.64" | 0.00" | 20.20" | 9.3 F | 0.8 F |
| 10/6 | 44 F | 68 F | 56 F | 0.58" | 27.73" | 0.00" | 20.20" | 9.7 F | 0.7 F |
| 10/7 | 44 F | 67 F | 56 F | 0.66" | 27.81" | 0.00" | 20.20" | 10.2 F | 0.7 F |
| 10/8 | 43 F | 67 F | 55 F | 0.74" | 27.89" | 0.00" | 20.20" | 10.6 F | 0.7 F |
| 10/9 | 43 F | 66 F | 55 F | 0.83" | 27.98" | 0.00" | 20.20" | 11 F | 0.6 F |
| 10/10 | 42 F | 66 F | 54 F | 0.91" | 28.06" | 0.00" | 20.20" | 11.4 F | 0.6 F |
| 10/11 | 42 F | 65 F | 54 F | 0.99" | 28.14" | 0.00" | 20.20" | 11.9 F | 0.5 F |
| 10/12 | 41 F | 65 F | 53 F | 1.07" | 28.22" | 0.00" | 20.20" | 12.3 F | 0.4 F |
| 10/13 | 41 F | 64 F | 53 F | 1.16" | 28.31" | 0.10" | 20.30" | 12.7 F | 0.4 F |
| 10/14 | 41 F | 64 F | 52 F | 1.24" | 28.39" | 0.10" | 20.30" | 13.1 F | 0.3 F |
| 10/15 | 40 F | 63 F | 52 F | 1.32" | 28.47" | 0.10" | 20.30" | 13.5 F | 0.2 F |
| 10/16 | 40 F | 63 F | 51 F | 1.40" | 28.55" | 0.10" | 20.30" | 14 F | 0.2 F |
| 10/17 | 39 F | 62 F | 51 F | 1.48" | 28.63" | 0.10" | 20.30" | 14.4 F | 0.2 F |
| 10/18 | 39 F | 62 F | 50 F | 1.56" | 28.71" | 0.20" | 20.40" | 14.9 F | 0.1 F |
| 10/19 | 38 F | 61 F | 50 F | 1.64" | 28.79" | 0.20" | 20.40" | 15.4 F | 0.1 F |
| 10/20 | 38 F | 61 F | 49 F | 1.71" | 28.86" | 0.20" | 20.40" | 15.8 F | 0.1 F |
| 10/21 | 37 F | 60 F | 49 F | 1.79" | 28.94" | 0.30" | 20.50" | 16.3 F | 0.1 F |
| 10/22 | 37 F | 60 F | 48 F | 1.86" | 29.01" | 0.30" | 20.50" | 16.8 F | 0.1 F |
| 10/23 | 36 F | 59 F | 48 F | 1.93" | 29.08" | 0.30" | 20.50" | 17.3 F | N/A |
| 10/24 | 36 F | 59 F | 47 F | 1.99" | 29.14" | 0.40" | 20.60" | 17.8 F | N/A |
| 10/25 | 36 F | 58 F | 47 F | 2.06" | 29.21" | 0.40" | 20.60" | 18.3 F | N/A |
| 10/26 | 35 F | 58 F | 46 F | 2.12" | 29.27" | 0.40" | 20.60" | 18.8 F | N/A |
| 10/27 | 35 F | 57 F | 46 F | 2.18" | 29.33" | 0.50" | 20.70" | 19.3 F | N/A |
| 10/28 | 34 F | 56 F | 45 F | 2.25" | 29.40" | 0.50" | 20.70" | 19.8 F | N/A |
| 10/29 | 34 F | 56 F | 45 F | 2.31" | 29.46" | 0.60" | 20.80" | 20.2 F | N/A |
| 10/30 | 33 F | 55 F | 44 F | 2.37" | 29.52" | 0.60" | 20.80" | 20.7 F | N/A |
| 10/31 | 33 F | 55 F | 44 F | 2.43" | 29.58" | 0.70" | 20.90" | 21.2 F | N/A |
